Childhood obesity: A national health survey weighed a sample of 532 boys aged 6-11 and found that 89 of them were overweight. They weighed a sample of469 girls aged 6-11 and found that 71 of them were overweight. Can you conclude that the proportion of boys who are overweight differs from the proportion ofgirls 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 thea = 0.10 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 a = 0.10 level of significance.Part 1 of 5(a) State the null and alternate hypotheses.Ho: P₁ = P₂H₁: P₁ P₂This hypothesis test is a two-tailed ▼test.Part: 1 / 5Part 2 of 5Find the critical value(s). Round the answer(s) to at least two decimal places. If there is more than one critical value, separate them with commas.Critical value(s):X

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Answered: Childhood obesity: A national health…

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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In a study conducted by the U.S. Department of Health and Human Services, a sample of 546 boys aged 6–11 was weighed, and it was determined that 89 of them were overweight. A sample of 508 girls aged 6–11 was also weighed, and 74 of them were overweight. Can you conclude that the proportion of boys who are overweight differs from the proportion of girls who are overweight? Find the P-value and state a conclusion. Round the answer to four decimal places.
Researchers conducted two surveys about teens are their use of social media. The first survey asked a random sample of 800 U.S. teens about their use of Instagram. A second survey asked the same questions to a random sample of 2253 Canadian teens. In these two studies, 73% of U.S. teens and 88% of Canadian teens said that they use Instagram. Use these results to answer the following questions about the proportion of U.S. and Canadian teens that use Instagram. Is there a statistically significant difference between the use of social media by U.S. teens and Canadian teens? No, there is no difference between the proportion of U.S. teens that use Instagram and the proportion of Canadian teens that use Instagram because both the lower limit and the upper limit of the confidence interval are negative values. Yes, the proportion of U.S. teens that use Instagram is significantly less than the proportion of Canadian teens that use Instagram difference because both…
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According to the Humane Society, 33% of households in the United States own at least one cat. You are interested in determining whether the proportion of households of the students at your school that own at least one cat is different from the national proportion. Suppose you survey an SRS of students at your school and find that 25% of them own cats, which yields a p-value of .092. Interpret this p-value.

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