\begin{tabular}{|r|r|r|r|} \hline 41 & 4/1/2017 & 55.29 & 58.34 \\ \hline 42 & 5/1/2017 & 57.60 & 60.37 \\ \hline 44 & 6/1/2017 & 53.71 & 55.76 \\ \hline 45 & 7/1/2017 & 51.56 & 51.93 \\ \hline 46 & 9/1/2017 & 50.98 & 52.77 \\ \hline 47 & 10/1/2017 & 53.62 & 53.11 \\ \hline 48 & 11/1/2017 & 59.48 & 53.31 \\ \hline 49 & 12/1/2017 & 63.26 & 55.32 \\ \hline 50 & 1/1/2018 & 65.17 & 56.54 \\ \hline 51 & 2/1/2018 & 59.30 & 55.44 \\ \hline 52 & 3/1/2018 & 58.67 & 56.54 \\ \hline 53 & 4/1/2018 & 60.60 & 56.06 \\ \hline 54 & 5/1/2018 & 63.74 & 56.30 \\ \hline 55 & 6/1/2018 & 69.06 & 48.49 \\ \hline 56 & 7/1/2018 & 69.05 & 51.83 \\ \hline 57 & 8/1/2018 & 73.28 & 51.93 \\ \hline 58 & 9/1/2018 & 75.26 & 56.69 \\ \hline 59 & 10/1/2018 & 73.36 & 57.68 \\ \hline 60 & 11/1/2018 & 73.73 & 66.30 \\ \hline 61 & 12/1/2018 & 65.72 & 65.24 \\ \hline 62 & & & \\ \hline 63 & & & \\ \hline \end{tabular} a-1. Calculate the mean and the standard deviation for Corporation A. Note: Round final answers to 2 decimal places. a-2. Calculate the mean and the standard deviation for Corporation B. Note: Round final answers to 2 decimal places. b. Which corporation had the higher average stock price over the time period? Which corporation's stock price had greater dispersion as measured by the standard deviation