Exercise 11-13 Algo The manager of a supermarket would like the variance of the waiting times of the customers not to exceed 24 minutes-squared. would add a new cash register if the variance exceeds this threshold, She regularly checks the waiting times of the customers to ensure that the variance does not rise above the allowed level. In a recent random sample of 45 customer waiting times, she popped computes the sample variance as 3.3 minutes-squared. She believes that the waiting times are normally distributed. (You may find useful to reference the appropriate table: chi-square table or F table) book a. Select the null and the alternative hypotheses to test if the threshold has been crossed. Ha: 62 3 2. 4, HA: 02 3 2,4 Ha: 02 = 2.4; HA: 02 1 2.4 Ho: 02 2 2. 4; HA1 93 3 2.4 b-1. Calculate the value of the test statistic. (Round Intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.) Test slatsto b-2. Find the pivalue