Dr. Smith wishes to compare three widely used sleeping preparations with regard to possible "hangover" effects. Twelve volunteers are given a problem-solving test at 9:00 a.m. after having been administered the standard recommended dose of one of the preparations (according to random assignment) the night before. The results are given below.
(a) Give $H_0 and H_A$.
(b) Is there a significant treatment effect $(use \alpha = .05)$?
(c) If significant results are obtained in (b) use Tukey's HSD test (α = .05) to make all possible pairwise comparisons among the groups. Draw final conclusions.

Question

Dr. Smith wishes to compare three widely used sleeping preparations with regard to possible "hangover" effects. Twelve volunteers are given a problem-solving test at 9:00 a.m. after having been administered the standard recommended dose of one of the preparations (according to random assignment) the night before. The results are given below. 
(a) Give $H_0 and H_A$. 
(b) Is there a significant treatment effect $(use \alpha = .05)$? 
(c) If significant results are obtained in (b) use Tukey's HSD test (α = .05) to make all possible pairwise comparisons among the groups. Draw final conclusions.

Quizplus · Accepted Answer

The Answer of Dr. Smith wishes to compare three widely used sleeping preparations with regard to possible "hangover" effects. Twelve volunteers are given a problem-solving test at 9:00 a.m. after having been administered the standard recommended dose of one of the preparations (according to random assignment) the night before. The results are given below. 
(a) Give $H_0 and H_A$. 
(b) Is there a significant treatment effect $(use \alpha = .05)$? 
(c) If significant results are obtained in (b) use Tukey's HSD test (α = .05) to make all possible pairwise comparisons among the groups. Draw final conclusions.

Dr Smith Wishes to Compare Three Widely Used Sleeping Preparations H0andHAH_0 and H_AH0​andHA​

Dr Smith Wishes to Compare Three Widely Used Sleeping Preparations $H_0 and H_A$