Suppose the local convenience store wishes to analyze the wa…
Suppose the local convenience store wishes to analyze the wait time to check out during the lunch rush by taking a random sample of 12 wait times. The sample mean was found to be 4.2 minutes with a sample standard deviation of 0.86 minutes. Assume the population of wait times is normally distributed. Which of the following is closest to a 95% confidence interval for the true mean wait time.