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Question: Suppose that a queue has n servers and that the length of time to complete a job is an exponential random variable. If a job is at the top of the queue and will be handled by the next available server, what is the distribution of the waiting time until service? What is the distribution of the waiting time until service of the next job in the queue?
The spot rate of the Australian dollar is $.62. The 1-year forward rate of the Australian dollar is $.60. The Australian 1-year interest rate is 9 percent.
Using the table of random numbers in Appendix A-1, draw a stratified random sample of 10 boys and 10 girls from the given population:
question use the values in the joint probability table to solve the equations
A random sample is taken to determine what percentage of a large city will vote for a certain candidate for mayor. To save time the polling company decides to randomly selected households and survey each person eligible to vote living in the house..
a couple is getting married on june 20th at an outdoor ceremony. in recent years it has rained only 5 days in june.
as part of the national health and nutrition examination survey hemoglobin levels were checked for a sample of 1139 men
Also give a credible set of highest posterior probability close to 95% for the parameter in question. Plot both the prior and the posterior distributions of the parameter.
In your capacity as assistant to the administrator at Freedom Hospital, you have been asked to develop a graphical presentation that focuses on the insurance.
If the dealer shows 100 cars, what's the expected number of sales? What's the variance of the number of sales if n=100, assuming independence?
What aspect of this distribution makes it difficult to summarize, or to discuss, center and spread?- What would you suggest doing with these data if we want to understand them better?
an airline operates a call center to handle customer questions and complaints. the airline monitors a sample of calls
Show that using the variance premium principle with β = 1, the premium for contract B is higher than that for contract A.
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