The following data represents the annual salary of a random sample of 40 human resource consultants, for a job with a complexity level of 2.

You are given the following information:

Sum of values = 2,933,640 Sum of squares of deviations of individual values from the mean = 160 924 444 Determine the lower bound for a 99% confidence interval for the average annual salary for all human resource consultants with job complexity level ? (Use a case2)

72929,9 72154,7 72711,5 72512,4 72811,1