Question 3 1 pts Questions 3-5 are based on the following information. The probability distribution of the number of course credits that UNR students took in Spring 2022 is shown below: #Credits: Probability: 6 0.05 9 0.10 12 13 15 16 17 18 21 0.20 0.10 0.20 0.05 0.05 0.15 0.10 The expected value of the number of course credits is 14.11 O 14.35 15.22 O 13.8 D Question 4 The variance of the number of course credits is O 14.63 15.21 19.47 21.62 1 pts