Mathematics, 08.04.2021 16:40 andybiersack154
The lengths of phone calls to the receptionist of a small company are i. i.d. with a mean of 4 minutes and an SD of 10 minutes. a) Find or approximate the chance that the total length of the next 250 calls is less than 20 hours. b) Did you use the normal curve in your calculation in a
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