What is the expected value of x

Reference no: EM131416155

Exercise gave the following table for the probability distribution of X = number of wins in three independent plays of a game for which the chance of winning each game = .2.

X = Number of wins	0	1	2	3
Probability	.512	.384	.096	.008

a. What is the expected value of X?

b. Write a sentence that interprets the expected value of X in this situation.

Exercise
The following table gives the probability distribution for X = number of wins in 3 plays of a game for which the chance of winning each game = .2, and plays are independent.

X = Number of wins	0	1	2	3
Probability	.512	.384	.096	.008

a. Find P(X ≤ 1), the probability of winning one or fewer games in three plays.

b. Find P(X > 1), the probability of winning more than one game in three plays.

c. Create a table that gives the cumulative probability distribution for X.

Reference no: EM131416155

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