Question

you are the customer servie manager for an international grocery store company. You have reveived complaints from customers that deli counter wait times are long in your South auckland stores. You decide to take random sample of 61 wait times in your south auckland stores and compare that to a sample of 121 wait times from west auckand stores. The average deli counter wait times in south auckland from the 61 customers was 183 seconds with a sample standard deviation of 70. The average deli wait times for the 121 west auckland customers was 163 with a sample standard deviation of 60

Q1 assuming equal variances, test the claim that the wait times in West Auckland are different from the wait time in south auckland at the 0.01 level of significance

Q2 assuming unequal variance, repeat the test at hte 0.01 level of significance

Q3 test whether the variance are equal at the 0.01 level of significance. Which test Q1 and Q2 would you report to your manager

Answer 1