Question: 4. [20 Points] Consider the following random sample of grades of students in a large $begin{array}{lclcccclll}72 & 36 & 38 & 56 & 46 &

4. [20 Points] Consider the following random sample of grades of

4. [20 Points] Consider the following random sample of grades of students in a large $\begin{array}{lclcccclll}72 & 36 & 38 & 56 & 46 & 56 & 45 & 70 & 70 & 48 38 & 45 & 100 & 53 & 48 & 35 & 70 & 53 & 58 & 56 51 & 33 & 52 & 70 & 80 & 10 & 95 & 99 & 100 & 100\end{array} $ a. Calculate the sample mean and the median of the above data set. b. Summarize the data, using a stem- and-leaf plot. c. Calculate the $35^{\text {th }}$ and $95^{\text {th }}$ percentiles. d. Comment on the shape of the distribution SP.DL.189

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