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 196 six-year-old girls weighed between 2003 and 2006 had an average weight of 48.8 pounds. Assume the population standard deviation is σ=15.2 pounds. Can you condude that the mean weight of six-year-old giris is lower in 2006 than in 2002 ? Use the α=0.10 ievel of significance and the p-value method with the T1-84 calculator. Part: 0/4 Part 1 of 4 State the appropriate null and alternate hypotheses. Compute the P-value. Round your answer to at least four decimal places. P. value =