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A computer center has three printers, A, B, C, which print at different speeds. Programs are routed to the first available printer. The probability that a program is routed to printers A, B, and C, are .6, .3, and .1, respectively. Occasionally a printer will jam and destroy a printout. The probability that printer A,B,and C, will jam are .01, .05, and .04, respectively. Your program is destroyed when a printer jams. What is the probabilty that printer is involved? Printer B is involved? Printer C is involved?
the meat department of a supermarket sells ground beef in approximate 1 lb packages but there is some variability. a
Find the percentage of the total variation that cant explained by the linear relationship between the two variable.
A simple random sample of 36 bulbs yields a mean lifetime of 504 hours. Construct and interpret a 99% confidence interval for the mean lifetime of all such bulbs.
it is known that the variance of a population equals 1296. a random sample of 144 observations is going to be taken
Construct a 89% confidence interval estimate of the overall percentage of the B.C. population in favour of such a casino and what size of sample would be required to do this
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 ..
State the null and alternative hypotheses using proper Statistical Notation
At the end of the Halloween Festival the organizers estimated that a family of participants spent in average $50.00 with a standard deviation of $15.00. If 49 participants (49 = size of the sample) are selected randomly, what's the likeihood that ..
A very large shipment of parts contains 10% defectives. 2 parts are chosen at random from the shipment and checked. Let the random variable X denote the number of defectives found. Find the probability distribution of this random variable.
Determine whether the survey figure for urban people is also true for rural people on the basis of the sample data.
A standard deviation of $1500. at the 0.01 level of significance, can it be concluded that state employees earn on average less than federal employees?
How many days should be considered if a 95 percent confidence is used and the estimate is to be within one hundred dollars?
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