Question: Marketing and Consumer Behavior A new advertising program involves placing small screens on the back of taxi front seats in order to run several advertisements continuously. The theory is that riders give their undivided attention to these ads during the entire trip. However, advertisers worry that their ad may not be viewed during a typical ride. Independent random samples of taxi ride times (in minutes) in two cities were obtained. Is there any evidence to suggest that the mean taxi ride time is different in San Diego and Phoenix? Assume normality, with σ1 = 6.2 and σ2 = 4.9, and use a = 0.01. Write a Solution Trail for this problem.