Exhibit: Check Out Times.

The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took the customers in the sample to check out was 3.1 minutes with a standard deviation of 0.5 minutes. We want to test to determine whether or not the mean waiting time of all customers is any different from 3 minutes (use the significance level 0.02 for the test).

Round your solutions for this Exhibit to4 digits.

Question 30

1pts

Refer to the Exhibit Check Out Times.

Provide the null and the alternative hypotheses.

Question 33 1 pts Refer to the Exhibit Check Out Times. State your conclusion for the test. (1. ta/2 we reject H0. Therefore, there is enough evidence to conclude that the mean waiting time of all customers is different from 3 minutes. (3. t; we do not reject Ho. Therefore, there is not enough evidence to conclude that the mean waiting time of all customers is any different from 3 minutes. (1. ta/2 we do not reject HO. Therefore, there is not enough evidence to conclude that the mean waiting time of all customers is any different from 3 minutes. (3 Za/2 we do not reject Ho. Therefore, there is not enough evidence to conclude that the mean waiting time of all customers is any different from 3 minutes. D Question 30 1 pts Refer to the Exhibit Check Out Times. Provide the null and the alternative hypotheses. O HO: p73.1; H1:,u=3.1 O HO: ,u%3;H1:,u,=3 O HO: p23;H1:,u793 O HO: p23.1;H1:,u73.1 Refer to the Exhibit Tires Life Expectancy. Provide the null and the alternative hypotheses. :p225;H1: \"25 :p