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Spare servers are maintained in stock to support IT operations. A study determined that on average, there are four demands for this type of server per day. What is the probability that on a given day a spare server will be requested
(i) More than four times?
(ii) Not at all?
(iii) If 4 servers are stocked, what is the probability of not having enough on a given day?
(iv) How many spare servers need to be stocked so that the probability of not having enough on a given day is 5%
a company is develoing a new golf ball. the overall distance is approximately normally distributed and has a standard
Michael's Tire Company performs free tire balance and rotation for the life of any tires purchased there on a first-come, first-served basis. One mechanic handles this and can usually complete the job in an average of 20 minutes. Customers arrive ..
You are a researcher who conducted a study of soft-drink preferences among residents in a test market prior to an advertising campaign for a new cola product. Of the participants, 130 are teenagers and 130 are adults.
Determine the estimated population mean?
University officials at a major university would like to use three -term moving averages to examine enrollment. Enrollment data (in thousands of students) for the 12 most recent terms are shown in middle column of the table below.
imagine the following game of chance. there are four dollar bills on the table. your roll a fair die repeatedly. every
What decision would you make based on the expected utility approach? In this case are you a risk taker or a risk avoider?
a bakery has an average daily expense of 1350. the standard deviation is 150. the owner takes a sample of 50 bills what
jim is in the 23rd percentile rank and jessica is in the 59th percentile rank. the variable is age and not at all
In a certain distribution of numbers the mean is 60 with a standard deviation of 8. Use Chebyshevs theorum to tell the probability that a number lies in each interval.
Class consists of 55% women, and 45% men 10% of the women smoke and 20% of the men smoke, what is the probability that a randomly selected smoker is female?
1. find the margin of error for the given values of csand nc0.95s3.1n812. construct the confidence interval to find the
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