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What is the standard deviation of the number of daily

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Reference no: EM131972141

1. Suppose you roll a six-sided die 7 times and count the number of fives. What is the probability you get exactly two fives?

2. The probability distribution of the daily number of customers at the YumYum is given below.

Daily number of customers 20,40,60,80

Probability 0.2,0.3,0.4,0.1

  • What is the probability that on a given day the YumYum has more than 30 customers?
  • What is the expected value of the number of daily customers?
  • What is the standard deviation of the number of daily customers?

Reference no: EM131972141

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