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In a grand jury case, a bookstore was indicted in Oklahoma County on several counts of selling an obscene book
Douglas Boats is a supplier of boating equipment for the states of Oregon and Washington.
Does the sample provide sufficient evidence that the mean pH level in the water differs from 8.5? Conduct a test at the ? = .01 level
For a Shewhart control chart using 3-sigma limits,
Suppose event A has a 0.99 probability of occurring and event B has a 0.98 probability of occurring.
A. What is the probability of discovering that your five best friends all have cellphone numbers ending in 7?
XYZ car rental company determined that the distance traveled per car per year is normally distributed with a standard deviation of 645 miles. If 12% of the cars travel more than 55,000 miles, what
Bob compares his SAT Verbal score of 400 to Marge's ACT Verbal score of 20. "I beat you," he exclaims. "My score is 20 times your score!" Although his multiplication is good, his logic is faulty.
Yet in the city as a whole, about 29%of the eligible jurors were women. Let p denote the probability that a juror drawn by the judge is a woman. Then to test the judge’s fairness in selecting wo
If A has a grade value of 4, B has a grade value of 3 and C has a grade value of 1, what is the expected grade of the class? Which law of probability will you use to compute this?
Consider two urns with the following composition: Urn 1 contains 5 red and 15 black balls, Urn 2 contains 8 red and 12 black balls.
Assume that an old used car fails to start 10% of the time. The other 90% of the time it drives for a time period which is uniformly distributed in the interval 20 to 30 minutes. In this interval al
A coin with the probability of heads being 0.8 is tossed 4 tim
North Manufacturing has a demand for 1,000 pumps each year
You wish to determine whether consumers have made substantial progress in reducing their credit card debt? Based on a sample of 1000 consumers in September 2001,
A professor want to know how students feel about gun control, so he surveys his students asking %60Are you in favor or opposed to gun control.%60 All of his students respond. What is the major so
Scores from a statistics exam are reported as deviation (difference from the mean) scores. Which of the following deviation scores indicates that the student has a higher position in the class d
What is the probability that Bob will win that wonderful trip on the basis of his gasoline sales this month?
Among 500 freshmen pursuing a business degree at a university, 347 are enrolled in an economics course, 247 are enrolled in a mathematics course, and 120 are enrolled in both an economics and a m
Write down the probability distribution of X, the insurance company's annual gain from such a policy (i.e., the amount of money made by the insurance company from such a policy).
Height X of adult women are normally distributed with mean 63.7 inches and standard deviation 2.71 iches. Romeo who is 68.25 inches tall wishes to date only women who are shorter than he but with
Josh makes three word-processing errors per page on the first draft of his reports for work. What is the probability that on the next page he will make
The Collection from the Best of Classical Music
In the following study, participants were randomly assigned to receive humanistic therapy, psychodynamic therapy, or behavioral therapy for their depression.
Enzyme immunoassay (EIA) tests are used to screen blood specimens for the presence of antibodies to HIV, the virus that causes AIDS. Antibodies indicate the presence of the virus.