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Suppose that customers arrive at a service facility with a single server according to a Poisson process with rate λ. The server waits until there are four customers in the system before beginning to serve them, all at once. The service times are independent random variables, all having a
uniform distribution on the interval (0,1). Moreover, the system capacity is equal to four customers. What fraction of time, , are there i customer(s) in the system, over a long period?
Indication, Use the results on renewal processes.
the lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. random
What are the underlying assumptions of Spearman rank-order scale?
With a selling price of 40 dollars each, how many pool cues must be sold to break even? What would the total revenue be at this break even point?
Financing with a Portfolio Raleigh Corp. needs to borrow funds for 1 year to finance an expenditure in the United States. The following interest rates are available:
Draw a sketch of the standard normal distribution curves, one for the current process and another one for the recentered process. Label the spec limits and shade the area of the curve that corresponds to your answer.
1. The time needed to complete a final examination in a particular college course is normally distributed with a mean of 79 minutes and a standard deviation of 8 minutes. Answer the following questions. a. What is the probability of completing the..
The amount of milk that the American Cookie Company sells in a given week is random. Suppose the milk sells for $2.00 per cup and it costs the store $1.50 per cup. What is the expected number of cups of milk the store will sell in a given week
a large manufacturing firm tests job applicants. test scores are normally distributed with a mean of 500 and a standard
A bowl contains 16 chips, of which 6 are red, 7 are white, and 3 are blue. If four chips are taken at random and without replacement, find the probability that: there is at least one chip of each color.
An entrepreneur owns two hotels, one in the western region of a certain state and the other in the eastern region. He thinks that the average amount spent by guests for lunch at his Friendly Café-West is less than $34.50
iq scores have a mean of 134. a sample of 13 people had a mean iq of 129 with a sd of 9. find the value of the test
State an appropriate null hypothesis and alternative hypothesis for her to consider as the framework for a one-proportion z-test. Calculate the p-value of the observed sample proportion
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