A petrol pump station has 4 pumps. The service times follow the exponential distribution with a mean of 6 min and cars arrive for service in a Poisson process at the rate of 30 cars per hour. (a) What is the probability that an arrival would have to wait in line?

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Q: The sub-group indices of the consumer price index number for urban non-manual employees of an indust...

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A: Mean = ΣXi/n = (40+49+37+48+54+39)/6 = 44.5  

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Q: Using the TI-84 calculator, find the area under the standard normal curve. Round the answers to four...

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Q: Twenty years ago, Juan Medina and Bertha Zenith got married. The Medina-Zenith family's biggest life...

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Q: expected

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Q: Let X1, ....X, be an ID sample from N(H, o) and Y,,.... Y, be an IID sample from N(u,, o3) and assum...

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Q: The local one-person barber shop can accommodate a maximum of 5 people at a time (4 waiting and 1 ge...

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