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3 years ago

Someone please help. I will give brainliest.

Mathematics

2 answers:

Pepsi [2]3 years ago

4 0

2. -56

1. 35x

3. 60mph

5. 10.33

4. 13.05$

6.5

7. 34

8.14.09

9.1200

10.53

12. 67.0

13. 6.21

14. 32

Hope it helps you!!! :D

Nastasia [14]3 years ago

3 0

Answer:

Step-by-step explanation:

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The solution would be like this for this specific problem:

H0: p = p0, or 
H0: p ≥ p0, or
H0: p ≤ p0

find the test statistic z = (pHat - p0) / sqrt(p0 * (1-p0) / n)

where pHat = X / n

The p-value of the test is the area under the normal curve that is in agreement with the alternate hypothesis. 
H1: p ≠ p0; p-value is the area in the tails greater than |z|
H1: p < p0; p-value is the area to the left of z
H1: p > p0; p-value is the area to the right of z

Hypothesis equation:

H0: p ≥ 0.67 vs. H1: p < 0.67

The test statistic is: 
z = ( 0.5526316 - 0.67 ) / ( √ ( 0.67 * (1 - 0.67 ) / 38 )
z = -1.538681

The p-value = P( Z < z ) 
= P( Z < -1.538681 )
= 0.0619

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3 years ago

Which best describes Nosaira's work and answer? Her work is correct, but there is one solution rather than no solution. Her work

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Answer:

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Step-by-step explanation:

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The equation of the trend line is ŷ = 0.15x - 23.21

<h3>How to determine the average rate of change of the trend line?</h3>

The points are given as:

hr =>808, 768, 655, 684, 637, 619, 613, 609, 563

w => 93, 94, 66, 81, 86, 75, 61, 69, 55.

Using a graphing calculator, we have the following calculation summary:

Sum of X = 5956
Sum of Y = 680
Mean X = 661.7778
Mean Y = 75.5556
Sum of squares (SSX) = 50569.5556
Sum of products (SP) = 7547.1111

The regression equation is represented as:

ŷ = bX + a

Where:

b = SP/SSX

b = 7547.11/50569.56

b = 0.14924

a = MY - bMX

a = 75.56 - (0.15*661.78)

a = -23.20961

This gives

ŷ = 0.14924X - 23.20961

Approximate

ŷ = 0.15x - 23.21

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