The weight in pounds) for a population of school aged children is normally distr
ID: 3057361 • Letter: T
Question
The weight in pounds) for a population of school aged children is normally distributed with a mean equal to 126 ± 25 pounds sample of 100 children n 100) to test whether children in this population are gaining weight at a 0.05 level of significance o Suppose we select a E Part la) dard in the What are the null and atormative hypotheses? H, z 126 O He-126 H,RS126 lue esis cause HtJF 126 an Hi > 126 ues art(b) What is the ortical value for this test? Part ic) What ies the mean of the sampling dist bution? Part id) What is the stardard error of the mean for the samping distrbution?Explanation / Answer
b) Crtical value = Z0.05 = 1.645
c) Mean of sampling distribution = 126
d) Standard error of the sampling distribution = 25 / sqrt(100) = 2.5
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.