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Category > Math Posted 30 Aug 2017 My Price 8.00

The probability distribution of X

A small grocery store is considering installing an express checkout line. Let X be the number of customers in the regular checkout line. Note that these numbers include the customers being served, if any. The probability distribution of X is given in the table below.
 

x

0

1

2

3

P(X=x)

0.1

0.5

0.3

0.1


 

1.) Find the probability that one or two customers are in the regular checkout line.

2.) What is the expected value of the random variable X?

3.)What is the probability that two people or less are in line?

4.)What is the probability that one and two people are in line?

5.)What is the variance of the random variable X?

Answers

AccountingQueen
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Status NEW Posted 30 Aug 2017 02:08 PM My Price 8.00

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