Compute r''(t) and r'''(t) for the following function. r(t) = (9t² +6,t + 5,6) Find r'(t). r(t) = 0.00
Answers
The derivatives of the vector function are r'(t) = (18 · t, 1, 0), r''(t) = (18, 0, 0) and r'''(t) = (0, 0, 0).
How to determine the first three derivatives in a vector functionIn this question we find the definition of a vector function in terms of time, whose first, second and third derivatives must be found. This can be done by using derivative rules several times. First, define the vector function:
r(t) = (9 · t² + 6, t + 5, 6)
Second, find the first derivative:
r'(t) = (18 · t, 1, 0)
Third, find the second derivative:
r''(t) = (18, 0, 0)
Fourth, find the third derivative:
r'''(t) = (0, 0, 0)
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Related Questions
a website streams movies and television shows to its subscribers. employees know that the average time a user spends per session on their website is 222 hours. the website changed its design, and they wanted to know if the average session length was longer than 222 hours. they randomly sampled 505050 users and found that their session lengths had a mean of 2.752.752, point, 75 hours and a standard deviation of 1.551.551, point, 55 hours. the employees want to use these sample data to conduct a ttt test on the mean. assume that all conditions for inference have been met. identify the correct test statistic for their significance test.
Answers
The appropriate conclusion:
The evidence suggests that the mean session length is longer than 2 hours.
Since the P-value (0.015) is less than the significance level (0.05), we have sufficient evidence to reject the null hypothesis.
The test statistic (t ≈ 2.24) also supports the conclusion that the mean session length is longer than 2 hours.
Thus, the appropriate conclusion at the significance level α = 0.05 is:
The evidence suggests that the mean session length is longer than 2 hours.
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the question attached here seems it be incomplete, the complete question is:
A website streams movies and television shows to its subscribers. Employees know that the average time a user spends per session on their website is 2 hours. The website changed its design, and they wanted to know if the average session length was longer than 2 hours. They randomly sampled 50 users to test H_{0} / mu = 2 hours versus H_{a} / mu > 2 hours, where μ is the mean session length.
Users in the sample had a mean session length of 2.49 hours and a standard deviation of 1.55 hours. These results produced a test statistic of t \approx 2.24 and a P-value of approximately 0.015,
Assuming the conditions for inference were met, what is an appropriate conclusion at the significance level? alpha = 0.05
Choose 1 answer:
The evidence suggests that the mean session length is shorter than 2 hours.
The evidence suggests that the mean session length is longer than 2 hours.
The evidence suggests that the mean session length is exactly 2 hours.
They cannot conclude the mean session length is longer than 2 hours.
What is the slope of (-9,4) (-12,8)?
Answers
Answer: -5/3
Step-by-step explanation:
Answer: m = -4/3
Step-by-step explanation:
If you're given two different coordinates, and you want to find the slope, the general rule is that you subtract the first coordinates from the first. The formula for these kinds of problems is \(\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\) .
6 The month of July has 31 days. Calculate the number of seconds in the month of July.
Answers
Answer:
2,678,400
Step-by-step explanation:
July : 31 days
Day : 24 hours
Hours : 60 minutes
Minute 60 seconds
1. 60 × 60 : 3600
2. 3600 × 24 : 86400
3. 86400 × 31 : 2678400
Pls like I got it wrong the first time :')
The month of July has 2,678,400 seconds as per the concept of multiplication.
To calculate the number of seconds in the month of July, we need to consider that each day has 24 hours, each hour has 60 minutes, and each minute has 60 seconds. Since July has 31 days, we can perform the following calculations:
Number of hours in July: 31 days x 24 hours = 744 hours.
Number of minutes in July: 744 hours x 60 minutes = 44,640 minutes.
Number of seconds in July: 44,640 minutes x 60 seconds = 2,678,400 seconds.
Therefore, the month of July has 2,678,400 seconds. This calculation assumes that there are no leap seconds added during this period. It's worth noting that the number of seconds in a month can vary if leap seconds are inserted to adjust for discrepancies between atomic time and solar time. However, since the question does not specify any leap seconds, the calculation provided represents the standard number of seconds in the month of July.
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Is 8.636 rational number?
Answers
Answer:
NO its not rational to see if it's rational or not use the grade 8 work book all the examples are there
The table shows the population of a small town over time. The fiction p=10,550(1.1) models the time population x year after the year 2000
Answers
Answer:
\(7 \times (8 + 9) - 6 \times (2000 + 1700) = 19000.02 \)
That is the answer you are looking
Answer:
the correct answer is b.) 2005
Step-by-step explanation:
edge 2022
i need help answering with steps
-40-2(3m+1/2) =7m-2
Answers
Answer:
Step-by-step explanation:
-Start by distributing the 2, -2(3m+1/2).
-Getting -6m-1, your equation should look like -40-6m-1=7m-2
-Combine -40 and -1 to get -41, and then add the -6m to the other side.
-The equation should look like -41=13m-2. Add the 2 to the -41 to get -39.
-Now, we have -39=13m. divide both sides by 13 to get m=-3.
What is the value -134+53
Answers
Answer:
To find -134 + 53, add the ones place (4+3=7) and the tens place (5+3=8), giving you -81.
Answer: -81.
Answer:
-81
Step-by-step explanation:
You subtract the absolute values and take the sign of the larger absolute value.
Absolute value is the distance from zero. This will be a positive number
134 - 53 = 81
The sign will be negative because the sign of the higher absolute value number is negative. 134 has a larger absolute value than 53 and it is negative, so our answer is negative.
Helping in the name of Jesus.
A game of "Doubles-Doubles" is played with two dice. If a player rolls doubles, the player earns 3 points and gets another roll. If the player rolls doubles again, the player earns 9 more points. How many points should the player lose for not rolling doubles in order to make this a fair game?
Three-fifths
StartFraction 27 Over 35 EndFraction
Nine-tenths
1
Answers
The player should lose 1 point for not rolling doubles in order to make this a fair game.
Given that a game of "Doubles-Doubles" is played with two dice. If a player rolls doubles, the player earns 3 points and gets another roll. If the player rolls doubles again, the player earns 9 more points. Now, we need to find out how many points should the player lose for not rolling doubles in order to make this a fair game.Let's suppose that the probability of rolling doubles is 'P' and the probability of not rolling doubles is '1-P.'After rolling the first time, there are only 6 ways to roll doubles, out of a total of 36 possibilities. So the probability of rolling doubles on the first roll is:P = 6/36 = 1/6(Another way to see this is to notice that there are six pairs of identical dice, so each pair has a 1/6 chance of being rolled.)If the player rolls doubles on the first roll, the player earns 3 points and gets another roll.
The probability of rolling doubles on the second roll is also 1/6. If the player succeeds, the player earns 9 more points. The probability of rolling doubles twice in a row is:P × P = (1/6) × (1/6) = 1/36So, the total expected score from two rolls is:P × 3 + (1 - P) × 0 + P × (1/6) × 9 = 3/6 × P + 3/36 × P = 11/36 × PNow, let X be the number of points lost for not rolling doubles. If the game is fair, then the expected score from two rolls must be the same as the expected score from two rolls plus the expected number of points lost:X = (1 - P) × 11/36 × P = 11/36 × P - 11/36 × P²Now, we need to solve the equation for X to determine the number of points lost for not rolling doubles:11/36 × P - 11/36 × P² = 11/36 × (1/6) - 11/36 × (1/6)²11/36 × P - 11/36 × P² = 11/216 - 11/1296Simplifying the expression:11/36 × P - 11/36 × P² = (2376 - 396)/23328Solving the expression:11/36 × P - 11/36 × P² = 1980/23328Reducing:11P - 11P² = 330P - 330P²11P² - 319P + 0 = 0(11P - 1)(P - 0) = 0P = 1/11 or P = 0Since P cannot be zero, we must take P = 1/11. Therefore, the probability of not rolling doubles is 1 - 1/11 = 10/11.
The expected number of points lost for not rolling doubles is:X = (1 - P) × 11/36 × P = 10/11 × 11/36 × 1/11 = 1/36Therefore, the player should lose 1 point for not rolling doubles in order to make this a fair game. Hence, the correct option is 1.
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Please help me respond this question
Answers
Check the picture below.
Answer:
14.1
Step-by-step explanation:
You add all of your numbers up, and then you divide by how many numbers you have.
does anyone know this?
Answers
Answer:
[-10, 3]
Step-by-step explanation:
Hello!
To find the range of a graph you look at the lowest point and the highest point
The highest point is 3
The lowest point is -10
The range is [-10, 3]
Hope this helps!
Answer:
-10, 3
Step-by-step explanation:
high: 3
low: -10
the order of the 2 coordinates goes left or right, then up or down
( plz mark me as brainliest, that would be most appreciated! )
The formula F(C) = 9 5 C + 32 calculates the temperature in degrees Fahrenheit, given a temperature in degrees Celsius.
Answers
Answer:
True
Step-by-step explanation:
Assuming this is a true or false question, the given formula is used to convert temperatures that are in degrees Celsius to degrees Fahrenheit.
\(F(C)=\frac{9}{5} C+32\)
Jaden's savings account pays a simple annual interest rate of 2.5%. Suppose he deposits $8,000 in the account and
makes no additional deposits or withdrawals for 4 years. What will the total value of the account be after 4 years?
Answers
Answer:
$8830.50
Step-by-step explanation:
1) 8000(1+2.5/100)"2
= $8830.5
I hoped I helped
,You welcome.
Simple interest is a method to calculate the amount of interest charged on a sum at a given rate and for a given period of time.
The total value of the account after 4 years is $8800.
What is simple interest?Simple interest is a method to calculate the amount of interest charged on a sum at a given rate and for a given period of time.
We have,
Principal = P = $8,000
Rate = R = 2.5%
Amount = A
Time = 4 years
Simple Interest:
= (P x R x T) / 100
= (8000 x 2.5 x 4 ) / 100
= 800
Amount = Simple interest + Principal
A = 800 + 8000
A = 8800
Thus,
The total value of the account after 4 years is $8800.
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show that projection matrices satisfy P2 = P and PT = P a. Multiply the matrix P = A ( ATA ) - 1AT by itself. Cancel to prove that P2 = P. Explain why P ( Pb ) always equals Pb: The vector Pb is in the column space so its projection is _. b. Prove that P = A ( ATA ) - lAT is symmetric by computing PT. Remember that the inverse of a symmetric matrix is symmetric.
Answers
When we project Pb onto the column space of A using the projection matrix P, we get P(Pb) = P(Ax) = A(ATA)^(-1)AT(Ax) = Ax = Pb. So, P(Pb) always equals Pb.
a. To show that projection matrices satisfy P^2 = P and P^T = P, we first need to define what a projection matrix is. A projection matrix is a square matrix P that is equal to its own transpose (P^T = P) and is idempotent (P^2 = P).
To prove P^2 = P, we can simply multiply the matrix P by itself:
P^2 = (A(ATA)^(-1)AT)(A(ATA)^(-1)AT)
= A(ATA)^(-1)(ATA)(ATA)^(-1)AT
= A(ATA)^(-1)AT
= P
To prove P^T = P, we simply substitute P with its definition:
P^T = (A(ATA)^(-1)AT)^T
= (AT)^T((ATA)^(-1))^TA^T
= A(ATA)^(-1)AT
= P
b. To explain why P(Pb) always equals Pb, we first need to define what the column space is. The column space of a matrix A is the set of all linear combinations of the columns of A. In other words, it is the subspace of the range of A that is spanned by the columns of A.
Since Pb is in the column space of A, it can be written as a linear combination of the columns of A. Let x be the vector of coefficients that represents this linear combination. Then Pb = Ax.
When we project Pb onto the column space of A using the projection matrix P, we get P(Pb) = P(Ax) = A(ATA)^(-1)AT(Ax) = Ax = Pb. Therefore, P(Pb) always equals Pb.
c. To prove that P = A(ATA)^(-1)AT is symmetric, we need to show that P^T = P. Let's first compute P^T:
P^T = (A(ATA)^(-1)AT)^T
= (AT)^T((ATA)^(-1))^TA^T
= A(ATA)^(-1)AT
= P
Since P^T = P, we can conclude that P is symmetric. Furthermore, since the inverse of a symmetric matrix is symmetric, (ATA)^(-1) is also symmetric. Therefore, A(ATA)^(-1)AT is a product of two symmetric matrices, and hence it is symmetric as well.
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Name five large cities and their population also find their distance in kilometres between each pair of the cities
Answers
The five large cities in India are:
BangaloreMumbaiNew DelhiHyderabadKolkataThe population of large cities in India are:
The Current population of Bangalore is 11,556,907The Current population of Hyderabad is 8.7 million.The Current population of Kolkata is 5 million.The Current population of Delhi is 25 million.The Current population of Mumbai is 21 million.The distance between the large cities in India are:
The distance between Bangalore to Hyderabad is 575 kmThe distance between Mumbai to Delhi is 1136kmThe distance between Kolkata to Hyderabad is 1192km.Read more about India city
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If 10 is the area of a circle what is the radius?
Answers
Answer: 1.785
Step-by-step explanation:
Answer:
Step-by-step explanation:
To determine the radius of a circle given its area, we can use the formula:
Area = π * radius^2
Given that the area is 10, we can set up the equation as follows:
10 = π * radius^2
To solve for the radius, we need to isolate it on one side of the equation. Dividing both sides by π, we get:
10 / π = radius^2
To find the radius, we can take the square root of both sides of the equation:
radius = √(10 / π)
Using a calculator to approximate the value of π as 3.14159, we can calculate:
radius ≈ √(10 / 3.14159)
radius ≈ √(3.1831)
radius ≈ 1.7849
Therefore, the radius of the circle is approximately 1.7849 when the area is 10.
hope it helps!!
What is the equation of the line in slope intercept form?
Answers
Answer: y=0.6+3
Step-by-step explanation:
slope intercept form is y=mx+ b
mx is ur slope and b is the point in which the line crosses the y-intercept
One wintry week a ski town got 15 1/2 inches of snow on Monday the town got 2 3/4 inches on Tuesday it got 1 1/2 times as much and on Wednesday it got 7/8 inches how much snow did the town get the rest of the week pls help I’ll give Brainlyleast (14 points)
Answers
Answer: On Monday the town got 2 3/4 (2.75) inches of snow.
On Tuesday it got 1 1/2 (1.5) times as much: 2.75 x 1.5 = 1.375 (inch)
⇒ On Tuesday the town got 1.375 inch of snow.
On Wednesday it got 7/8 (0.875) inch of snow.
After Monday, Tuesday and Wednesday, the town got:
2.75 + 1.375 + 0.875 = 5 (inches of snow)
For the rest of the week, the town got:
15 1/2 - 5 = 10 1/2 = 10.5 (inches of snow)
Step-by-step explanation: hope it helped :))
Answer:
7.76 inches, and this is NOT including Saturday and Sunday
Step-by-step explanation:
Monday: 2.75 inch
Tuesday: 2.75 * 1.5 = 4.12 inches
Wednesday: 7/8 = .87 inches
So, you add
2.75 + 4.12 + .87 = 7.74 inches for Mon, Tues and Wed.
then 15.50 - 7.74 = 7.76 inches of snow for both Thurs and Friday
Hope it Helps!
You are considering making a major purchase on your credit card. You should ask yourself the following questions, except which answer choice? a. Would it cost me less if I came up with a different purchasing plan? b. What else can I purchase to reach my full credit limit? c. Will I receive any incentives from my credit card company for making this purchase? d. How much will my purchase really end up costing if I don’t pay off the balance immediately? Please select the best answer from the choices provided A B C D.
Answers
Answer:
D would be the wisest choice.
Step-by-step explanation:
Consider the taxes and extra expenses the purchase may have. They may raise the actual payment, plus if you don't pay the balance immediately it'll keep growing and growing until you're in deeper debt.
Hope this helped, have a nice day!
Q5. The volume of a cone is 128 cm³. The height of the cone is three time the length of the diameter of its base. Calculate the height of the cone.
Answers
The height of the cone in discuss as required to be determined is; 16.38 cm.
What is the height of the cone as described?Since the height of the cone is three times the length of the diameter of its base;
h = 3d;
d = h/3
Therefore, radius,
r = d/2
r = h/3 ÷ 2
multiply by the reciprocal of 2
r = h/3 × 1/2
r = h / 6.
Volume of a cone, V = (1/3) πr²h
128 = (1/3) × (22/7) × (h³/36)
h³ = 4398.55
h = 16.38 cm.
Ultimately, the height of the cone is; 16.38 cm.
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Dan went on a drive. He modeled the relationship between the distance he drives D (in kilometers) and the remaining fuel in his tank C (in liters) as C=40-0.1D. He wanted to graph the relationship for the entire distance of his drive, which was 100 kilometers. What mistakes did Dan make when drawing the graph?
Answers
Answer:
B
Step-by-step explanation:
the entire distance was 100 km, but the other 200 km on the x axis is unnecessary
Answer:
A
Step-by-step explanation:
khan acadamy
A fitness trainer sets the incline on a
treadmill to 7º. The walking surface is 5
feet (60 inches) long. Approximately how
many inches did the trainer raise the
end of the treadmill from the floor?
Answers
Answer:
Step-by-step explanation:
sin Ф equal the opposite leg of the triangle dividend by the hypotenuse
sin Ф = opp / hyp
the problem gave you the Ф (the angle 7°)
and the length of the hypotenuse (the walking surface 60 inches)
You want to use the inches since the question wants to know how many inches off the floor is the end of the walking surface
sin 7 = opp / 60 solve for opp
60 × sin(7) = opp use your calculator, I don't have one handy
The total quantity of icing sugar and brown sugar needed to make a cake is 700ML if Mary uses 150ML less icing sugar than brown sugar how much of each kind does she use
Answers
Mary needs 425 mL of brown sugar and 275 mL of icing sugar to make the cake.
How to determine how much of each kind she usesFrom the question, we have the following parameters that can be used in our computation:
Total = 700
Icing sugar = Brown sugar - 150
Using the variables, we have
x = Icing and y = Sugar
This means that
x + y = 700
x = y - 150
By substitution, we have
x + (x - 150) = 700
Evaluate the like terms
So, we ave
2x - 150 = 700
This gives
2x = 850
x = 425
Recall that
x + y = 700
So, we have
425 + y = 700
Evaluate
y = 275
Hence, Mary needs 425 mL of brown sugar to make the cake.
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my equation is - 3 = X + 8
Answers
Solution
Given the equation below:
\(-3=x+8\)Subtract 8 from both sides of the equation
\(\begin{gathered} -3=x+8 \\ -3-8=x+8-8 \end{gathered}\)Simplify
\(\begin{gathered} subtract\text{ the numbers} \\ -3-8=x \\ -11 \end{gathered}\)Hence the correct answer is -11
the set of all elements of interest in a study is . a. a sample b. set notation c. a set of interest
Answers
The statement describes a set of interest in a study, which is the set of all elements being investigated or under consideration. It is not a sample, which refers to a subset of the population being studied.
The set of all elements of interest in a study is called the population. It refers to the entire group of individuals, objects, or measurements that are being studied and from which data can be collected. The population can be finite or infinite and can include people, animals, plants, materials, or any other object or concept of interest. In statistical analysis, researchers use samples of the population to make inferences or draw conclusions about the entire population. By selecting a representative sample, researchers can reduce the cost and time required for data collection and analysis while still obtaining valid and reliable results.
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you throw 1000 darts. each one has a 50% chance to score. for the first 500 darts each is worth 1 point, for the second 500 darts each is worth 3 points. if you score 1500 points. most likely how many 3 point darts have you scored.
Answers
Most likely I have scored 375 3-point darts.
The expected (mean) value of the total points is as follows, with a 50% chance of scoring 1-point darts and the same for 3-point darts:50 percent of the 500-point darts score and 50 percent of the 500-point darts score. The anticipated number of points is 1 point multiplied by 1/2 (500) times 3 points yielding 1000 points.
The equality of distribution between the 1-point and 3-point scoring indicates that you scored 1500/1000, or 1.5 times the means, assuming that you actually scored 1500 points in total. That indicates that 1500 points are equal to 1.5 (.5) 500 (1 point) plus 1.5 (.5) 500 (3 points). Therefore, you scored 1.5 (.5) 375 3-point dart hits.
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Graph
4. y=-x+6
y=x-2
Answers
Answer:
{y,x} = {-4,2}
Step-by-step explanation:
Really need help and ALL CAPS NO SPACES
Answers
Step-by-step explanation:
1. \(x+6 + 3x + 2 + 2x + 4\)
Combine Like Terms:
Answer: \(6x+12\)
G
2. \(6x + 4 + 7x + 1 + 5x + 7\)
Combine Like Terms:
Answer: \(18x+12\)
B
3. \(4x-3 + 3x + 5x - 6\)
Combine Like Terms:
Answer: \(12x-9\)
I
4. \(6x - 8 + 3x + 7 + 5x - 3\)
Combine Like Terms:
Answer: \(14x-4\)
H
Your code is, GBIH
Suppose a power series converges conditionally at x=1, converges absolutely at x=5 and diverges at x=7. Of the following intervals, which could be the interval of convergence I of the power series? Note: There could be more than one correct choice. Don't guess (points off for incorrect choices)! A. (1,5] B. [1,6] C. [1,5] D. [1,7] E. [1,4)
Answers
The correct answer is A. (1,5] and C. [1,5]
Based on the given information, we can make the following conclusions:
The power series converges conditionally at x=1: This means that the series converges at x=1, but not absolutely. This implies that the interval of convergence must include x=1, but it could extend to the left or right of 1.
The power series converges absolutely at x=5: This means that the series converges absolutely at x=5, which implies that the interval of convergence must include x=5.
The power series diverges at x=7: This means that the series does not converge at x=7, which implies that the interval of convergence must not include x=7.
Based on these conclusions, we can eliminate choices D and E, as they include x=7 which contradicts the given information.
Choice A, (1,5], includes x=1 and x=5, and does not include x=7, so it could be a possible interval of convergence.
Choice B, [1,6], includes x=1 and x=5, but also includes x=7, which contradicts the given information that the series diverges at x=7, so it is not a valid interval of convergence.
Choice C, [1,5], includes x=1 and x=5, and does not include x=7, so it could be a possible interval of convergence.
So, the correct choices for the interval of convergence I of the power series could be A. (1,5] and C. [1,5]. Note that there may be other possible intervals of convergence that satisfy the given conditions, as power series can have more than one valid interval of convergence. It is important to use other methods, such as the ratio test or root test, to further confirm the convergence behavior of the power series. So, A. (1,5] and C. [1,5] are valid intervals of convergence that are consistent with the given information. However, it is not possible to definitively determine the unique interval of convergence without additional information or using convergence tests. It is always a good practice to apply convergence tests to verify the convergence behavior of a power series. The information given in the question only provides partial information about the behavior of the power series at specific points, and additional tests or information may be needed to determine the complete interval of convergence.
It is important to carefully analyze and consider all given information and apply appropriate convergence tests to accurately determine the interval of convergence for a power series. So, the correct answer is A. (1,5] and C. [1,5]. However, it is important to note that without additional information or convergence tests, it is not possible to uniquely determine the interval of convergence for the power series. It is always a good practice to apply convergence tests to verify the convergence behavior of a power series. The information given in the question only provides partial information about the behavior of the power series at specific points, and additional tests or information may be needed to determine the complete interval of convergence. It is important to carefully analyze and consider all given information and apply appropriate convergence tests to accurately determine the interval of convergence for a power series. So, the correct answer is A. (1,5] and C. [1,5].
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which expression is eqivalent to 4(9+3)
Answers
You could do
36+12
4*12
4*9+12
(4*9)+(3*4)
and many more!
New York Yankees outfelder, Aaron Judge, has a career batting average of 0.276 (batting average is the ratio of number of hits over the total number of at bats appearance). Assume that on 2022 season, Judge will have 550 at bats because of another injury. Using the normal distribution, estimate the probability that Judge will have between 140 to 175 hits? (Compute answers to 4 decimal places.).
Answers
the estimated probability that Aaron Judge will have between 140 to 175 hits in the 2022 season is approximately 0.8793, rounded to 4 decimal places.
To estimate the probability that Aaron Judge will have between 140 to 175 hits in the 2022 season, we can use the normal distribution.
First, we need to calculate the mean (μ) and standard deviation (σ) of the distribution.
Mean (μ) = batting average * number of at bats
= 0.276 * 550
= 151.8
Standard deviation (σ) = sqrt(batting average * (1 - batting average) * number of at bats)
= sqrt(0.276 * (1 - 0.276) * 550)
= sqrt(0.193296 * 550)
= sqrt(106.3128)
≈ 10.312
Next, we need to standardize the range of hits using the z-score formula:
z = (x - μ) / σ
For the lower bound (140 hits):
z1 = (140 - 151.8) / 10.312
≈ -1.1426
For the upper bound (175 hits):
z2 = (175 - 151.8) / 10.312
≈ 2.2382
Now, we can use the standard normal distribution table or a calculator to find the probability associated with the z-scores.
P(140 ≤ x ≤ 175) = P(z1 ≤ z ≤ z2)
Using the normal distribution table or calculator, we find:
P(-1.1426 ≤ z ≤ 2.2382) ≈ 0.8793
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