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In a bank drive-through, there is a single service window and room only for two cars to line-up to wait for service. The mean time between arrivals for drive through customers is 5 minutes. The mean time to complete a customer transaction is 3 minutes. The number of arrivals is distributed according to a Poisson distribution and the service times are exponentially distributed.
Ssample by constructing a histogram and finding the sample mean and standard deviation, are we investigating the sampling distribution of the mean? why or why not?
Which depressed this tobacco company stock.) Describe the shape, center, and spread of the data after you omit the outlier. (c) The data appear in time order readi.
Explain can you find out statistical support in this poll for that statement. When it comes to the war in Iraq, among which of the subsiquent statements comes closer to your point of view.
A company supplies poultry farmers with hens, advertising that a mature B300 Layer produces eggs with a mean weight of 60.7 grams. Suppose that egg weights follow a Normal model with standard deviation 3.1 grams.
Determine the average number of parts waiting to be worked on, the percentage of time the operator is working, and the percentage of time the machine is idle.
seventy percent of the bicycles sold by a certain store are mountain bikes. among 100 randomly selected bike purchases
If the probability of getting caught is .02, the probability of getting a ticket is .97 and the probabiity of having to pay the ticket is .94, what is the direct cost of running a red light.
the time that it takes a randomly selected job applicant to perform a certain task has a distribution that can be
Estimate the probability that a randomly selected jar will have a fill, x, that is out of specification. Assume that the process is in control and that the population of all jar fills is normally distributed.
In a random sample of 328 florida public school employees, 231 were female. write a 95% confidence interval for the proportion of the population of florida public school employees that are female.
a local police precinct has seen a recent increase in the number of complaints filed regarding how officers are
use the one-proportion z-interval procedure to find the required confidence interval. be sure to check the conditions
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