Heavy children: Are children heavier now than they were in the past? The National Health and Nutrition Examination Survey (NHANES) taken between 1999 and 2002 reported that the mean weight of six-year-old girls in the United States was 49

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Heavy children: Are children heavier now than they were in the past? The National Health and Nutrition Examination Survey (NHANES) taken between 1999 and 2002 reported that the mean weight of six-year-old girls in the United States was 49.3 pounds. Another NHANES survey, published in 2008, reported that a sample of 192 six-year-old girls weighed between 2003 and 2006 had an average weight of 48.2 pounds. Assume the population standard deviation is o = 14.3 pounds. Can you conclude that the mean weight of six-year-old girls in 2006 is different from what it was in 2002? Use thea = 0.10 level of significance and the P-value method with the TI-84 calculator.

Part 1

State the appropriate null and alternate hypotheses.

Ho: u = 49.3

H1:49.3

This hypothesis test is a two-tailed - test.

Part 2

Compute the P-value. Round the answer to four decimal places. P-value =