Mathematics, 04.11.2019 23:31 unknowntay04

Arandom sample of n=36 flights were taken and the time recorded to board the flight. previous studies had determined that mean time to be 40 minutes with standard deviation of 24 minutes.

a) what is the sampling distribution of the sample mean?
b) what is the probability that the average time exceeds 45 minutes?

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Arandom sample of n=36 flights were taken and the time recorded to board the flight. previous studie...