statistics for business and economics-econometrics

Import Assignment4.xls into gretl.
A study of the pay of chief financial officers (CFOs) examined the increase in cash compensation of the CFOs of 104 companies, adjusted for inflation, in a recent year. Is there evidence that the mean real compensation () of CFOs increased that year? Use an alpha level of 0.05.
To achieve full grades document the four common steps for tests of significance (refer to page 365).
NOTE: You can use gretl to perform calculations.