Question

A drop down options: two sided or one sided // paired t test, one sample t test , or test or 2 independent means

A supermarket has noticed a recent increase in the number of people venting their frustrations on social media about excessive waiting times during check-out. Even though they hire additional staff during peak shopping hours, they're not sure if they should hire even more staff during these peak hours or allocate some staff to non-peak hours. For a random selection of times during peak hours and another random selection of times during non-peak hours, the manager-on-duty goes to the check-out lanes and counts the number of people waiting in line. (a) Which type of hypothesis test should the supermarket use to determine if there is a difference in the number of people waiting in line during peak vs. non-peak hours? (b) What is the meaning of a Type II error in this context? The supermarket concludes when in reality

B drop down options: a difference exists or no difference exists // a difference exists or no difference exists

Answer 1

A) Blanks are: two sided and 2 independent means

B ) Blanks are: no difference exists   when in reality a difference exists