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\begin{tabular}{|r|r|} \hline Professor & Salary \\ \hline 1 & $190,000 \\ \hline 2 & $126,000 \\ \hline 3 & $152,000 \\ \hline 4 & $166,000 \\ \hline 5 & $146,000 \\ \hline 6 & $168,000 \\ \hline 7 & $156,000 \\ \hline 8 & $160,000 \\ \hline 9 & $152,000 \\ \hline 10 & $198,000 \\ \hline 11 & $120,000 \\ \hline 12 & $134,000 \\ \hline 13 & $134,000 \\ \hline 14 & $190,000 \\ \hline 15 & $140,000 \\ \hline 16 & $146,000 \\ \hline 17 & $112,000 \\ \hline 18 & $174,000 \\ \hline 19 & $142,000 \\ \hline 20 & $156,000 \\ \hline 21 & $140,000 \\ \hline 22 & $138,000 \\ \hline 23 & $130,000 \\ \hline 24 & $130,000 \\ \hline 25 & $152,000 \\ \hline 26 & $182,000 \\ \hline 27 & $180,000 \\ \hline 28 & $182,000 \\ \hline 29 & $138,000 \\ \hline 30 & $102,000 \\ \hline \end{tabular} The file P02_45.xIsx contains the salaries of 30 business school professors at a (fictional) large state university. a. If you increased every professor's salary by $3,000, what would happen to the mean and medlan salary? b. If you increased every professor's salary by $3,000, what would happen to the standard deviation of the salaries? If yo answer is zero, enter " 0 ". c. If you increased every professor's salary by 2%, what would happen to the standard deviation of the salaries? If your answer is zero, enter " 0