8 Many studies have been conducted to test the effects of

Last updated: 7/7/2023

8 Many studies have been conducted to test the effects of marijuana use on mental abilities In one such study groups of light and heavy users of marijuana in college were tested for memory recall with the summary results given below Marijuana Light Use Heavy Use Answer H 0 Value Rejection Region P value Conclusion n n 65 n 65 a Use a 0 01 significance level to test the claim that the population of heavy marijuana users has a lower mean than the light users Fill in the expressions below H Mean Keep H 0 1 53 3 51 3 Standard Deviation S 3 6 4 5 Test statistics Critical Reject H 0 b Which confidence level is appropriate here to construct a confidence interval for the difference between the two population means