Sample annual salaries? (in thousands of? dollars) for employeesat a company are listed.
51
34?
59
52?
27
27
51??
34
59
31??
52
51
41
?(a) Find the sample mean and sample standard deviation.
?(b) Each employee in the sample is given a
66?%
raise. Find the sample mean and sample standard deviation forthe revised data set.
?(c) To calculate the monthly? salary, divide each originalsalary by 12. Find the sample mean and sample standard deviationfor the revised data set.
?(d) What can you conclude from the results of? (a), (b), and?(c)
