I need help with this question. For staffing purposes, a retail store manager would like to standardize the number of checkout lanes to keep open on a particular shift.She believes that if the standard deviation of the hourly customer arrival rates is 8 customers or less, then a fixed number of checkoutlanes can be staffed without excessive customer waiting time or excessive clerk idle time. However, before determining how manycheckout lanes (and thus clerks) to use, she must verify that the standard deviation of the arrival rates does not exceed 8. Accordingly,a sample of 25 hourly customer arrival rates was compiled for that shift over the past week.picture Click here for the Excel Data Filea. Select the hypotheses to test whether the standard deviation of the customer arrival rates exceeds 8.Ho :o2s 64; Нд: o* > 64Но:3 64; Нд: оt # 64Ho: o 2 64; HA: 0² < 64b. Calculate the value of the test statistic. Assume that customer arrival rates are normally distributed. (Round intermediatecalculations to at least 4 decimal places and final answer to 3 decimal places.)Test statistic Hourly Arrival1Rates2122312441035118927117811491111011611123121241312514128151221612417122181141997201212110422136239124123251152611527

Name: I need help with this question. For staffing purposes, a retail store
Uploaded: 2024-03-20T07:07:37.000Z
Channel: Bartleby
Description: I need help with this question. For staffing purposes, a retail store manager would like to standardize the number of checkout lanes to keep open on a particular shift.She believes that if the standard deviation of the hourly customer arrival rates i