Below Average 29 42 38 40 43 40 30 42 Average 30 35 39 28 31

Below Average 29 42 38 40 43 40 30 42
Average 30 35 39 28 31 31 29 35 29 33
High Average 26 32 21 20 23 22

If you were interested in confidence intervals for all three levels, how would you construct three 95% Bonferroni adjusted confidence intervals?

Solution

the reqired confidence interval is 0.95 so the level of significance is 0.05

hence by  Bonferroni adjusted confidence intervals we get  level of significance is 0.05/3=0.067

Below Average (33.81, 42.19)

Average (29.72, 34.28)

High Average  (19.78, 28.22)