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One side of a rectangular stage is 2 meters longer than the other. If the diagonal is 10 meters, than what are the lengths of the sides?
Setermine the probability that a specific driver had exactly two violations?
How should the candidate purchase the five commercials to maximize the estimated number of additional voters?
The random variable x is the number of houses sold by a realtor in a single month at the real-estate office. Its probability distribution is:
A state executive claims that the average number of acres in western Pennsylvania State Park is less than 2000 acres. A random sample of five parks is selected, and the number of acres is shown. At alpha=.01, is there enough evidence to support th..
Is there evidence that the population mean amount is different from 8.17 ounces? (Use a 0.05 level of significance.)
Consider that measurement 2 (M2) in random sample of 1000 controls from the Disease Y study population follows the normal distribution.
The table below shows the scores of a group of 15 students in mathematics and art: Determine if the locations of distribution of scores for these students differ significantly for the two subjects. Use the hand calculation method and then use PHSta..
A standard deviation of 100, what would be the cutoff score for selecting the top 10% of applicants, assuming that the standardized test is normally distributed?
Suppose that the mean of the annual return for common stocks from 2000 to 2012 was 8.5%, and the standard deviation of the annual return was 25.2%.
In an evaluation of the medical lab, the manager is interested in the efficiency of three technicians when they process four routine blood tests.
A company manufacturers batteries in batches of 18 and there is a 3% rate of defects. Find the standard deviation for the number of defects per batch.
What is the probability that there are less than 500 nails in a randomly selected five pound box of nails?
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