a survey of 15 cities find that the average commute time is 25.4 minutes. If a sample of in one… 1 answer below »

a survey of 15 cities find that the average commute time is 25.4 minutes. If a sample of in one of the cities had a standard deviation of 5.3 min. with a mean of 22.1. At alpha=.05 can the claim be maintained that the commuters in this city has a shorter commute than average?