Question

3. According to the 2004 National Health and Nutrition Examination Survey (NHANES) sponsored by the U.S. government, a random sample of 712 males between 20 and 29 years of age and a random sample of 1,001 males over the age of 75 were weighed (in kg). Here is a summary of the results: n +- 1 20 - 29 years old 712 83.4 18.7 75+ years old 1001 78.5 19.0 (source: http://www.cdc.govinchis/data/ad/ad347.pan. Do the data provide evidence that the younger male population weighs more con average) than the older male population? Use a 99% confidence level for the p- value method hypothesis test. (Show your variables and work!) [4 pts]

Answer 1

yourx Date let Xi = Mean of sample * Let X2 before after. let D = X 2-X Ho : ed=0 VS Hi udo. test - statistic, t d 0.95 113169 /120 t. 3.2261 p-values P[tig 2 312261] 0.0022 ince, p-value ca=0.08. We reject Ho Thus, A Cortain training jump. program vertical is able to încrease ma