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In a study of how late people are to work, 73% of the variability of the amount of time late could be accounted for by the time spent in traffic jams. What was the correlation coefficient?
If a company in emerging markets is randomly selected, what is the probability that its price-per-earnings ratio is above 17.5, which, according to Lemaigre, is the average for companies in the developed world?
The attached figure is from a journal article entitled "Neighborhood Social Disorder as a Determinant of Drug Injection Behaviors:
If the manufacturer sells the parts in packages of 10 parts, what are the mean and standard deviation of the number of useable parts in a package?
The accounting department at Western Materials Inc. national manufacturer of unattached garages, reports it takes two construction workers of a mean of 32 hours and standard deviation of 2 hours to erect Red Barn MODEL.
A government agency is putting a large project out for low bid. Bids are expected from 10 different contractors and will have a normal distribution with a mean of $3.5 million and a standard deviation of $0.25 million.
A business trip is equally likely to take 2, 3, or 4 days. After a d-day trip, the change in the traveler's weight, measured as an integer number of pounds, is uniformly distributed between -d and d pounds. For one such trip, denote the number of..
If the sample mean and 20% trimmed mean are nearly identical, it might be thought that for future studies, it will make little difference which measure of location is used. Comment on why this is not necessarily the case.
suppose a population proportion is .40 and 80 of the time when you draw a random sample from this population you get a
High correlation does not mean that the values are the same. Investment reports often include correlations.
A jar contains 12 marbles, 5 of which are blue and 7 of which are red. If 4 marbles are chosen at random and without replacement, what is the probability of selecting 3 blue ones and 1 red one?
In what situations will the way we deal with 'no difference' or 'no response' matter most? Explain.
We found several sources of data by doing a Google search on "faculty head count by rank and gender." In addition to discussing the pattern you find, provide the data, the name of the school, and the source of the data.
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