Question

7. Multiple Choice Question Suppose that we want to compare the waiting times between repairs of two systems (in days), S, and Sy. Here are histograms of the waiting times: 4.8 3.6 Frequency 24 12 0.0 20 60 20 SI Aanbas 100 8 150 200 250 300 350 52 Is it reasonable to assume that A. the populations are normal with equal variances B. the populations are normal with unequal variances C. the populations are not normal D. only one of the populations is normal E. none of the preceding

Answer 1

C) The Populations are not normal

Since for the both of the histrogram we cannot seen that data is normally diatributed that is bell shaped so as we increases the sample size it cannot be symmetric (by CLT approach) .