A company that rents DVDs from vending machines in grocery stores has developed the following probability distribution for the random variable X = the number of DVDs a customer rents per visit to a...



  1. A company that rents DVDs from vending machines in grocery stores has developed the following probability distribution for the random variable
    X
    = the number of DVDs a customer rents per visit to a machine.






















X



1



2



3



4




P(X)



0.5



0.3



0.1



0.1





  1. a) Find and interpret the mean (expected value) of
    X.

















  1. b) Find and interpret the standard deviation of
    X.



















  1. c) What is the probability that a customer rents more than 2 DVDs  per visit to a machine?




Jun 09, 2022
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