Suppose the number of cell phone calls made or received per day by cell phone users follows a normal distribution with a mean of 13.1 and a standard deviation of 4.3. Use this information to answer questions 6 - 9.

6 Safari File Edit View History Bookmarks Window Help MonJunl391l2PM H elearninglkctcsedu STA 21 0U: Intro to Statistical Reasoning (4222_1921) Homework 10 Quiz Hanna Mitchell Final Grade Attempt with highest grade Attempt 3 Submitted 6/13/22, 2:54 PM (EDT) El Feedback HW10 Question 8: Find a)? for a sample of size 100 Your Answer: 0'43 Feedback for student Your instructor hasn't added feedback ()9 Question 9 HW 10 Question 9: Find P07