Can you help me solve?

MAT-1580 Written Assignment 2 Sections 3.1-3.3 This data set represents quarterly approval rating of US presidents between years 1945 and 1950. Use the data set to answer questions 1-4. 39 87 46 35 69 82 39 60 57 75 36 54 57 63 24 55 51 50 32 36 45 43 37 32 R yn 1. (2 pts) Find the mean. 2. (2 pts) Find the median. 4. (2 pts) Find z-score of 51. 5. (2 pts) The following table lists the grades with respective credit hours for each class student has taken. Find the GPA (weighted mean). Credit Grade Hours 4 B 3 A 5 B 3 C 4 A