Mathematics, 09.07.2019 15:00 rubixcube4786434

The manager of a computer desk has collected enough data to conclude that the distribution of time per call is normally distributed with a mean equal to 8.21 minutes and a standard deviation of 2.14 minutes. what is the probability that three randomly monitored calls will each be completed in 4 minutes or less? (hint: remember probabilities of independent events)

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