Question: Please provide step by step solutions, thanks!! A sample was taken of 20 salaries of employees in a large company. The following are the annual

Please provide step by step solutions, thanks!!

A sample was taken of 20 salaries of employees in a large company. The following are the annual salaries (in thousands of dollars). For convenience, the data have been ordered.

28 31 34 35 37 41 42 42 42 47

49 51 52 52 60 61 67 72 75 77

a.What is the mean salary of the 20 employees? What is the median salary of the 20 employees?

b.Find the standard deviation of the mean salary of the 20 employees. (For this calculation, recall that the provided data are a sample.)

c.Suppose each employee in the company receives a $3000 raise for next year (each employee's salary is increased by $3000). How would this salary increase affect the mean and standard deviation?

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