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A computer center has three printers, A, B and C, which print at different speeds. Programs are routed to the first available printer. The probability that the program to printers A, b and C are 0.6, 0.3, 0.1, respectively. Occasionally a printer will jam and destroy a printout. The probability printers A, B and C will jam are 0.01, 0.05, and 0.04 respectively. Your program is destroyed when a printer jams. What is the probability printer A is involved? What is the probability printer B is involved? What is the probability printer C is involved?
1. for a month following a presidential illness very few homes were sold. afterwards the realty business returned to
determine the total area under the standard normal curve in parts a through c below. a find the area under the normal
A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a 1-hour flight is .02.
A random sample of size 10 is selected from the N (20, 5) distribution. What is the probability that the variance of this sample exceeds 10?
You wish to evaluate the proportion of customers who are satisfied with their supermarket at level of confidence of .92 and in .025 of true value. How large of sample is required?
police response time to an emergency call is the difference between the times the call is first received by the
As of 2012, the proportion of students who use a MacBook as their primary computer is 0.36. You believe that at your university the proportion is actually greater than 0.36. If you conduct a hypothesis test, what will the null and alternative hypo..
1) Twenty-five factory workers were asked how many vacation days they take a year. The average of the sample was 22.85 days, and the standard deviation was 5.80 days. In the past HR uses an average of 25 vacation days per worker in order to ..
the lifetimes of light bulbs of a particular type are normally distributed with a mean of 280 hours and a standard
Percentage points in either direction from what would have been obtained by interviewing all voters in the United States." Find the sample size suggested by this statement.
assume a normal distribution with a mean of 70 and a standard deviation of 12. what limits would include the middle 65
The response of the GSS question in 2006 about the number of hours daily spent watching TV, the responses by the seven subjects who identified themselves as Hindus were 2,3,2,1,0,1,4,3. find a point estimate of the population mean for Hindus. The ..
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