Question

A study was conducted for the effects of marijuana use on college students. Memory recall was evaluated by asking students to sort items.

Light Marijuana Users	Heavy Marijuana Users
n = 64 students x = 53.3 items correctly sorted s = 3.6 items correctly sorted	n = 65 students x = 51.3 items correctly sorted s = 4.5 items correctly sorted

At the 5% LOS, do the data suggest test that light users correctly sort more items than heavy users?

Answer 1

Solution-

Let X1 = Light Marijuana Users

X2 = Heavy Marijuana Users

population standard deviation is unknown so, t- test is conducted.

Test Results-

by test results null hypothesis is rejected.

So, there is enough evidence to claim that light users correctly sort more items than heavy users.