Question: 4 . A . 4 Mr . Streep takes the bus every workday. In the morning, his waiting times are uniformly distributed on the interval

4.A.4 Mr. Streep takes the bus every workday. In the morning, his waiting times are uniformly distributed on the interval 0,10 minutes. In the evening, his waiting times are uniformly distributed on the time interval 0,15 minutes. Assume that all waiting times are independent.
a. Calculate the expectation and the standard deviation of his total waiting time during a 5-day workweek.
b. Calculate the expected difference between his total waiting time in the evening and his total waiting time in the morning during a 5-day workweek.
4.A.4 Mr. Streep takes the bus every workday. In the morning,

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