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An automobile manufacturing plant produced 29 vehicles today: 9 were sedans, 10 were vans, and 10 were trucks. Plant managers are going to choose two of these vehicles for thorough inspection. The first vehicle will be chosen at random, and then the second vehicle will be chosen at random from the remaining vehicles. What is the probability that two vans will be selected? Report your answer as an exact fraction.
According to a recent survey, Americans get a mean of 7 hours of sleep per night. A random sample of 50 students at West Virginia University revealed the mean number of hours slept last night was 6 hours and 48 minutes
In a random sample of 10 adults from a nearby county, the mean waste generated per person per day was 4.35 pounds and the standard deviation was 1.88 pounds.
An SRS of 25 faculty members at a large southeastern university found that 10 felt that the university was supportive of female and minority faculty. What is the p-value of your test
a loan from a bank of 100000 is to be repaid by bob in 10 annual payments beginning 1 year from the date of the loan.
Convert these values to real terms if the price index values for the corresponding years are given by 100, 102, 103, 108.
A recent marketing and promotion campaign by Charles of the Ritz more than doubled the sales of the suntan lotion Bain de Soleil.
In "An Informal Look at Use of Bakery Department Tongs and Tissues," a researcher named Trinkaus reported: "Of 108 people observed extracting
CONSUMER SURVEYS A leading manufacturer of kitchen appliances advertised its products in two magazines: Good Housekeeping and the Ladies Home Journal.
Let X1, ..., Xn be i.i.d. random variables having a distribution P ? P, where P is the family of distributions on R having continuous c.d.f.'s
the student newspaper called campus press polled a simple random sample of 280 undergraduate students in order to study
Suppose that 50% of all people are opposed, evaluate probability of getting at least 89% opposed in survey of 1012 randomly selected people.
Describe what happens when the sample standard deviations get larger and repeat Part a with samples of size 150.
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