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You have below in a table the frequency distribution of the waiting time of customers at a sandwich shop. Using the information: calculate the Average

You have below in a table the frequency distribution of the waiting time of customers at a sandwich shop. Using the information:

  1. calculate the Average (Mean) and
  2. Standard Deviation of the waiting time for customers at this shop

Wait Time

Customers

10

60

12

125

14

75

15

40

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