## Description

Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables Expected value, variance, and standard deviation of random variables

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## Explanation & Answer

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Question 11 pts

The probability that a cellular phone company kiosk sells X number of new phone contracts per

day is shown below. Find the mean for this probability distribution. Round it to the nearest

tenths.

X 4 5 6 8

10

P(X) 0.4 0.3 0.1 0.15 0.05

Mean = ∑ 𝑥 ∗ 𝑝(𝑥)

Mean = 4*0.4 + 5*0.3+6*0.1+8*0.15 +10*0.05

Mean = 5.4

Question 21 pts

The probability that a cellular phone company kiosk sells X number of ne...