Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: QUIZ Students in a class take a quiz with eight questions. The number x of questions answered correctly can be approximated by the following probability distribution. [x] [0] [1] [2] [3] [4] [5] [6] [7] [8] [P open parentheses x close parentheses] 0.02 0.02 0.06 0.06 0.08 0.22 0.3 0.16 0.08 * Find the mean of the probability distribution to three significant digits. _____ * Find the variance of the probability distribution to three significant digits. _____ * Find the standard deviation of the probability distribution to three significant digits. _____ * Find the expected value of the probability distribution to three significant digits. _____
Right answer summary: part 1: 5.3; part 2: 3.25; part 3: 1.8; part 4: 5.3
Question state: todo