Hello, here is a question from my homework for Probability and Statistics. Please show the solution with full explanation. Thank you

2- Twenty-eight applicants interested in working for the Food Stamp program took an examination designed to measure their aptitude for social work. A stem and leaf plot of the 28 scores appears below, where the first column is the count per branch, the second column is the stem value, and the remaining digits are the leaves. Count Stems Leaves 9 3688 026799 Note: The stem is the tens and the leaf is the ones in the score 145667788 1234788 a. What is the median score? b. What is the sample mean for this data set? c. What is the value of the sample standard deviation? d. What is the range of this data