5. After watching a number of children playing games in a video arcade, a statistics practitioner estimated the following probability distribution of X, the number of games per visit. 1 3 4 f(x) 0.05 0.2 0.3 0.25 0.2 (a) What is the probability that a child will play at most three games? (b) What is the mean and variance of the number of games played? (c) Suppose that each game costs $2 to play. Use the laws of expected value and variance to determine the expected value and variance of the revenue (the amount of money) the arcade receives per child.
5. After watching a number of children playing games in a video arcade, a statistics practitioner estimated the following probability distribution of X, the number of games per visit. 1 3 4 f(x) 0.05 0.2 0.3 0.25 0.2 (a) What is the probability that a child will play at most three games? (b) What is the mean and variance of the number of games played? (c) Suppose that each game costs $2 to play. Use the laws of expected value and variance to determine the expected value and variance of the revenue (the amount of money) the arcade receives per child.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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