A November 13, 2015, report titled “The cost of hiring a new employee” by Annie Mueller (www.investopedia

.com) indicated that the average cost for an American company to fill a job vacancy was $3,500. Sample data showing costs to hire employees are in a file titled Hired.

a. Produce a relative frequency histogram for these data. Does it seem plausible the data were sampled from a normally distributed population?

b. Calculate the mean and standard deviation of the cost of filling a job vacancy.

c. Determine the probability that the cost of filling a job vacancy would be between $2,000 and $3,000.