Use the Following Information for Questions:
in the Survey of a Random

Use the following information for questions:
In the survey of a random sample of students at a university, two questions were "How many hours per week do you usually study?" and "Have you smoked marijuana in the past six months?" An analysis of the results produced the following Minitab output:
-What is the appropriate alternative hypothesis for this question?

A) H_a: $µ_1$ - $µ_2$ = 0
B) H_a: $\overline{x}_1$ - $\overline{x}_2$ < 0
C) H_a: $\overline{x}_1$ - $\overline{x}_2$ $\neq$ 0
D) H_a: $µ_1$ - $µ_2$ < 0