40. BINR Wait_Time. The manager of a small convenience store does not want her customers standing in line for too E long prior to a purchase. In particular, she is willing to hire an employee for another cash register if the average wait time of the customers is more than five minutes. The accompanying data file shows the wait time (Time in minutes) for 28 customers. a. Set up the null and the alternative hypotheses to determine if the manager needs to hire another employee. Answer Ho 5 b. Calculate the value of the test statistic and the p-value. What assumption regarding the population is necessary to implement this step? Vv Answer t57 =1.287; p-value = 0105. It is necessary to assume that the population is normally distributed. c. Decide whether the manager needs to hire another employee at a = 0.10. Because 0.105 > 0.10, do not reject H,. The average waiting time is not more than 5 minutes at the 10% level. File Edit Code View Plots Session Build Debug Profile Tools Help +. project R ... 11 2.9 Name Size Modified 12 7.8 O Rhistory O B Jul 21, 2024, 11:03 PM Showing 1 to 13 of 28 entries, 1 total columns O project.Rproj 205 B Jul 21, 2024, 11:03 PM Console Terminal x Background Jobs 0 jaggia_ba_2e_ch06_data.xIsx 56.1 KB Jul 21, 2024, 11:03 PM R R 4.4.1 . /cloud/project/ You are welcome to redistribute it under certain conditions. Type 'license()' or 'licence()' for distribution details. R is a collaborative project with many contributors. Type 'contributors()' for more information and citation()' on how to cite R or R packages in publications. Type 'demo()' for some demos, 'help()' for on-line help, or 'help. start()' for an HTML browser interface to help. Type 'q()' to quit R. > library(readx1) > myData View(myData)