Please show all the work and steps

Sample annual salaries {in thousands of dollars} for employees at a company are listed. 511.31584-63030543158334-65449% {all Find the sample mean and sample standard deviation. {b} Each employee in the sample is given a 5% raise. Find the sample mean and sample standard deviation for the revised data set. {c} To calculate the montth salary, divide each original salary by '12. Find the sample mean and sample standard deviation for the revised data set. {d} What can you conclude Tom the results of {a}, {h}, and {c}? {a} The sample mean is )_(= thousand dollars. {Round to one decimal place as needed.)