QUESTION 14 A sample of employees of a large pharmaceutical company has been obtained. The length of time (in months) they have worked for the company was recorded for each employee. The sample is 60, 54, 64, 56, 64, 63, 53, 59, 61, 60 The mean length of work is equal to 56.2 months 59.4 years 56.2 years 59.4 months