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What is the mean number of minutes for a dinner party

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Reference no: EM131651720

Question: Cramer's Bar and Grille in Dallas can seat 130 people at a time. The manager has been gathering data on the number of minutes a party of four spends in the restaurant from the moment they are seated to when they pay the check. What is the mean number of minutes for a dinner party of four? What is the variance and standard deviation?

Number of Minutes            Probability

60                                    0.05

70                                    0.15

80                                    0.20

90                                    0.45

100                                  0.10

110                                  0.05

Reference no: EM131651720

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