A Study Was Made to Determine Which Taxi Company Gave

Question 21

A study was made to determine which taxi company gave quicker service.Companies A and B were each called at 50 randomly selected times.The response times were recorded.The results are as follows. Company A Company B Mean response time 7.6 minutes 6.9 minutes Standard deviation 1.4 minutes 1.7 minutes At the 0.02 level of significance,test the claim that the two companies have different mean response times.