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Childhood obesity: A national health survey weighed a sample of 535 boys aged 6 - 11 and found that 83 of them were overweight. They weighed a sample of 474 girls aged 6 - 11 and found that 70

Childhood obesity: A national health survey weighed a sample of 535 boys aged 6 - 11 and found that 83 of them were overweight. They weighed a sample of 474 girls aged 6 - 11 and found that 70

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question

Childhood obesity: A national health survey weighed a sample of

535

boys aged

6

-

11

and found that

83

of them were overweight. They weighed a sample of

474

girls aged

6

-

11

and found that

70

of them were overweight. Can you conclude that the proportion of boys who are overweight is greater than the proportion of girls who are overweight? Let

p1

denote the proportion of boys who are overweight and let

p2

denote the proportion of girls who are overweight. Use the

=α0.05

level of significance and the critical value method with the table.

(a) State the appropriate null and alternate hypotheses.

(b) Compute the value of the test statistic.

(c) State a conclusion at the

=α0.05

 level of significance.

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