An aquarium reports that guests' mean visit time is 134

Last updated: 7/26/2022

An aquarium reports that guests' mean visit time is 134 minutes. Benjamin, a dolphin trainer at the aquarium, believes the mean visit time is not accurate for guests who visited in the past week. Benjamin randomly surveys guests who visited the aquarium in the past week and receives 28 responses. He calculates a sample mean of 137 minutes with a sample standard deviation of 3.5 minutes. Conduct a significance test using a significance level of α = 0.01 for the mean and make a conclusion. 4.536 > 2.771; Benjamin rejects the null hypothesis. The data suggests that the mean time for guests is mot 134 minutes over the past week. 4.454 > 2.771; Benjamin rejects the pull hypothesis. The data suggests that the mean time for guests is not 134 minutes over the past week. -4.454 <-2.771; Benjamin fails to reject the null hypothesis. The data suggests that the mean time for guests is 134 minutes over the past week. -4.536 <-2.771; Benjamin fails to reject the null hypothesis. The data suggests that the mean time for guests is 134 minutes over the past week.