Answer Happy

Confidence intervals. Joe's Trucking provides shipping service from the outlying areas of Austin to a known distribution point within downtown of Austin. To understand the number of trucks required for a given service, the operations manager conducts a study of the mean drive time ET). Assuming that the variance of the underlying distribution is no more than 0.8 hours, how large should the number of samples (trucks) n be to achieve (6,5) = (1,0.05) confidence i.e, P{\T. - E[T]] >} < 0.05, where T; is the time taken by each truck and T. = HT. Hint: You can use Chebyshev inequality here. n TA