History homework help
History homework help. FOR NEXT 3 QUESTIONS USE THE FOLLOWING DIRECTION: Manager of a grocery store wants to test to determine whether or not the mean waiting time of its customers is significantly more than 4 minutes. He takes a random sample of 36 customers and finds that the average length of time it took the customers in the sample to check out was 4.6 minutes. A national study estimates that standard deviation of length of time of grocery store customers is 1.8 minutes. What is the computed value of “test statistics” for this study?1.961.642.000.056None of the aboveFlag this QuestionQuestion 392.5 ptsThe P-value of this study isbetween 0.005 to 0.010.010.0250.02280.9772Flag this QuestionQuestion 402.5 ptsAt 5% level of significance, it can be concluded that the mean of the population issignificantly greater than 4not significantly greater than 4significantly less than 4significantly less than 4.6