Question

6. A researcher believes that young men experiment with alcohol and other substances earlier than do young women. The researcher has collected the following data on the year in middle school or high school when young men and young women first tried marijuana and first tried alcohol

Women marijuana Mean:4.61 S:1.62 n: 364

Women alc mean: 4.29 s: 1.64 n:677

Men marijuana mean: 4.39 s:1.7 N:380

men alc mean:4.22 s:1.7 N;617

(6th grade = 1, 7th grade = 2, 8th grade = 3, 9th grade = 4, 10th grade = 5, 11th grade = 6, an 12th grade= 7) Test the Null Hypothesis at the .01 α level that young women try marijuana at earlier grades than do young men.

Answer 1