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Travelers arrive at a bus station from 6 a.m., according to a Poisson process with rate λ = 1 per minute. The first bus leaves T minutes after 6 a.m.
(a) Calculate the mean and the variance of the number of travelers ready to board this bus if (i) T has an exponential distribution with mean equal to 15 minutes and (ii) T is uniformly distributed between 0 and 20 minutes.
(b) Calculate the average number of passengers on the bus if it leaves at 6:15 and if its capacity is 20 passengers.
Quarterly customer surveys are taken at a medical center. Each individual department has scores and is comparted to the medical center average. Department of Physical Therapy had scores of 9.14, 9.19 and 7.75 for quarters 1-3 respectively.
We are interested in determining whether or not the variances of the sales at two music stores (A & B) are equal. A sample of 10 days of sales at store A has a standard deviation of 30, while a sample of 16 days of sales from store B has a standar..
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Which one of the following influences a person's value system? Which one of the following have been found to be relatively universal values?
At a large block party there are 40 men and 30 women. You want to ask opinions abouthow to improve the next party. You choose at random 4 ofthe men and separately choose at random 3 of the women tointerview.(a) What is the probability that any of the..
If a patient from a study of 1000 people, who are equally divided into two groups (those taking a placebo and those taking Prozac), is experiencing nausea, what is the probability that he/she is taking Prozac?
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