Mathematics, 03.05.2021 06:30 jr928718

5. Cellular Phone Sales The probability that a cellular phone company kiosk sells X number of new phone
contracts per day is shown below. Find the mean,
variance, and standard deviation for this probability
distribution
х
4 5 6
10
P(X) 0.4 0.3 0.1 0.15 0.05
8
What is the probability that they will sell 6 or more
contracts three days in a row?

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