Question 5 Which of the following pairs of variables X and Y will likely have a negative correlation? . (1) X = outdoor temperature, Y: = amount of ice cream sold . (II) X = height of a mountain, Y =

Answer:

6 i think

Step-by-step explanation:

Step-by-step explanation:

The answer can be read off the intersection of the graph, which is (1,5), i.e. one unit in x and 5 units in y.

Step-by-step explanation:

Solve the problem step by step.

First,

Base area: 6 * 2.5 = 15

Then,

The area of the two smallersides:

2.5 * 4 = 10

10 * 2 = 20

After that,

The area of the two larger sides:

6 * 4 = 24

24 * 2 = 48

After all of the calculations, you add all of the sums up:

15+20+48

Which equals 83.

The equation form for this problem would be:

(6*2.5) + 2(2.5*4) + 2(6*4) = 83

Hope this helps and it wasn't too confusing!

There is insufficient evidence to conclude that the mean blood pressure for women is different from the mean blood pressure for men. To determine whether the mean blood pressure for women is equal to the mean blood pressure for men, a t-test is conducted using the sample data of 16 women (group 1) and their respective brothers' blood pressures (group 2).

The null hypothesis states that the means are equal, and the alternative hypothesis suggests they are different. The test statistic is calculated, critical points are identified, and the null hypothesis is either accepted or rejected based on the test results.

To carry out the t-test, we first calculate the test statistic. The formula for the test statistic (t) in this case is:

t = (x1 - x2) / sqrt((s1^2 / n1) + (s2^2 / n2))

where x1 and x2 are the sample means, s1 and s2 are the sample standard deviations, and n1 and n2 are the sample sizes.

Given:

x1 = 119.4 (average blood pressure for women)

x2 = 121.2 (average blood pressure for men)

s2d = 25 (pooled sample variance)

n1 = n2 = 16 (sample sizes)

α = 0.05 (Type I error value)

Now, we can calculate the test statistic:

t = (119.4 - 121.2) / sqrt((25/16) + (25/16))

 = -1.8 / sqrt(3.125 + 3.125)

 = -1.8 / sqrt(6.25)

 = -1.8 / 2.5

 = -0.72

Next, we determine the relevant critical point(s) for the t-test. Since the sample size is small (n1 = n2 = 16), we refer to the t-distribution with degrees of freedom equal to n1 + n2 - 2 = 30 - 2 = 28. Using a significance level (α) of 0.05, the critical value for a two-tailed test is approximately ±2.048.

Since the absolute value of the test statistic (0.72) is less than the critical value (2.048), we fail to reject the null hypothesis.

Learn more about null hypothesis here:

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Answer:

84 is your answer

Step-by-step explanation:

please mark me the brainlist

Answer:

84

Step-by-step explanation:

\(\frac{1}{2}*24*7 =\) 12 * 7 = 84

Answer:

2.4 or 12/5 or 2 2/5

Step-by-step explanation:

Answer:

17x+5

Step-by-step explanation:

14x- (-3x) = 17x

7-2=5

Answer:

D

Step-by-step explanation:

Answer:

13/25

Step-by-step explanation:

13 = 8 circles + 5 hearts.

25 = all the shapes.

(It says not to simplify... so the answer is 13/25)

Answer:

13/25

Explanation:

It's simple !

1. count the needed shape (this example is circle)

2. there is 8 circles , now count the total shapes !

3. there is 25 shapes

4. add 8 and 5 = 13 !

5. lastly, put them together as a fraction

Answer:

Step-by-step explanation:

The area of a square is 49 cm2. What is the perimeter, in cm, of the square?

first we use the inverse formula to find the side (√49 = 7), then multiply the side by 4 (7 x 4 = 28)

or you can use an expression

4 * √49 = 28

Answer:

Step-by-step explanation:

I'm just going to reverse the equation because I'm more comfortable with the x being on the left side:

25(x+4) = 350

Do distributive property (I'll explain down below if you don't know what that is):

25x+100=350

Same to both sides

25x = 250

Divide 25 on both sides

x = 10

Distributive property is when there are multiple terms inside the parenthesis and 1 or more term outside of it

To show this works, lets do 6(5+1)

We can either do 6*6 or we can do 30+6 and we get the same answer

Let me know if you have any questions

Answer:

Step-by-step explanation:

500 / 4 = 20 quarters we have

for the newspaper we will put only 3 quarters to machine

3 * 25 = 75 cents

75 - 60 = 15 cents lose

still we have 17 quarters

Answer:

62

Step-by-step explanation:

775 steps divided by 12.5 minutes is 62 steps per minute.

Answer:

1+15 / 5+3

we know 1+15 is 16

and 5+3 is 8

therefore; we get

16 / 8

2 is the answer

Answer:

249.6

Step-by-step explanation:

Answer:

249.6

Step-by-step explanation:

The word of in math can be interpreted as a multiplication symbol. This means 26% × 960

26% is also 0.26

so 0.26 × 960 = 249.6

Answer:

i think the second answer??

Step-by-step explanation:

Answer:

6 wholes

Step-by-step explanation:

\( \frac{19}{3} = 6 \frac{1}{3} \)

So there are 6 wholes in 19/3.

Answer:

x= - 8/3

Step-by-step explanation:

1- Multiply the monomials

2- Combine like terms

3- Rearrange variables to the left side of the equation

4- Divide both sides of the equation by the coefficient of the variable

5- Cross out the common factor

Answer: False

Step-by-step explanation:

The financing section deals with only the transactions that have to do with equity and debt. The Investing section deals with capital expenditure such as fixed assets and investments in other company securities.

The $50,000 should therefore be recorded in the Investing section as a Cash outflow.

The $100,000 is not a cash transaction but will be recorded in the Notes to the Statement of Cashflows as a Non-Cash transaction for disclosure purposes.

Step-by-step explanation:

Given the expression

\(-3m - [2m + (5 - m)] + 7\)

Step one

Firstly we have to open the inner bracket we have

\(-3m - [2m + 5 - m] + 7\)

Step two

we proceed further by opening up the next bracket we have

\(-3m - 2m -5 +m+ 7\)

Step three

we then have to collect like terms of m and rearrange.

\(=-3m - 2m+m -5+ 7\\=-4m+2\\=2-4m\)

Answer:

D. 160

Step-by-step explanation:

Answer:

y = 15/4 mm

x = 36/5 mm

Step-by-step explanation:

In similarity triangles, the corresponding sides are in same ratio.

          \(\sf \dfrac{3}{y}=\dfrac{4}{5}\\\\\bf Cross \ multiply,\\\\ y*4 = 3*5\\\\ y =\dfrac{15}{4}\\\\\boxed{y = \dfrac{15}{4}}\)

                               \(\sf \dfrac{x}{9}=\dfrac{4}{5}\\\\x = \dfrac{4}{5}*9\\\\x = \dfrac{36}{5}\\\\\boxed{x = \dfrac{36}{5} \ mm}\)

Answer:

fraction: 3 1/5  

Step-by-step explanation:

Answer:15 feet

Step-by-step explanation: you can’t park next to a fire hidratante l

also if you did then yo

Answer:

\(\frac{3}{11}\)

Step-by-step explanation:

assuming the recurring digits are 0.272727.... , then

we require 2 equations with the repeating digits placed after the decimal point.

let x = 0.2727.... (1) ← multiply both sides by 100

100x = 27.2727... (2)

subtract (1) from (2) thus eliminating the repeating digits

99x = 27 ( divide both sides by 99 )

x = \(\frac{27}{99}\) = \(\frac{3}{11}\) ← in simplest form

Answer:

Jimrgrant1 has already answered this correctly, 3/11.

Step-by-step explanation:

I took 1.0 and divided it by 0.272727 to give 3.666666 . . .

I looked for value that would convert this into a whole number when multiplied.  3 times 3.666666 . . . is equal to 11.  

That would mean a fraction equal to 0.272727 . . . would be 3/11

Answer:

He had $47 left from the school trip

Answer:

The slope of the line is 0 (there is no change in the y-axis)

Step-by-step explanation:

Here, we want to find the slope of the line that passes through the given points

We use a formula for this;

Mathematically;

m = y2-y1/x2-x1

Substituting the values;

m= (3.5-7/2)/3.5+4.5 = 0/8 = 0

The slope of the line is 0

Answer:

the graph of f(x)= -2-10x+16

Answer:

the vertex would be (-5,41)

Step-by-step explanation:

You just plug the -5 back into the equation to get 41

The null hypothesis is given by:

We also know that the correlation coefficient is r = 0.79 and that the confidence level is 1 - a = 1 - 0.05 = 0.95

r = 0.79 usually indicates a strong correlation, while we are spect a coefficient p = 0. Therefore, since it is 0.79 grater than 0.632, the null hypothesis is rejected.