9)A company is interested in testing the hypotheses that the mean number of sick days taken by all its employees is more than 10 days.The firm's statistician randomly selects 16 personnel files and notes the number of sick days taken by each employee.The sample average was found to be 12.2 days with a standard deviation of 2 days. At alpha = 0.025, is there sufficient evidence that the mean of sick days for the company's employees is more than 10 days?