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A basketball coach wants to know how many free throws an NBA playrs shoot during the course of an advantage pratice. The coack takes a random sample of 43 players and finds the average number of fee throws shoot per practice was 225 with the satandard deviation of 35. Consturct a 99% confidence interval for the average number of free throws in practice.
In Dallas some fire trucks were painted yellow (instead of red) to heighten their visibility. During a test period, the fleet of red fire trucks made 143, 348 runs and had 20 accidents, while the fleet of yellow firetrucks made 135,035 runs and had 4..
Using this data, is there enough evidence that the average depth of the ice sheet is below 3140 m? Assume that the depth of the ice sheet is normally dstributed. Use a test of hypotheses of level alpha = 0.05.
Four students riding to school together offer a the excuse of a flat tire on their car for missing a test. On the makeup test, the professor asks the students to each identify the tire that went flat.
The number of bombardment necessary to achieve the disintegration of a certain nucleus is assumed to have the distribution above. In one sequence in which b bombardments are available, of these have already failed to disintegrate the nucleus. What..
Except that their bed production plant is set up to produce beds in 100 bed lots. How many beds should they produce each week to minimize total four week inventory cost?
in a large population 95 of the households have cable tv. a simple random sample of 64 households is to be contacted
The probability that more than 6 planes arrive in the next minute is _____.
q1.in developing a regression equation from the following data to predict y by x the slope isxy9188155713a1.88 b 0.44 c
In past elections, the representative received 40 percent of the popular vote in that area of the state. She doubts whether it has changed much. How many registered voters should be sampled?
A researcher selects a random example of college students and measures number of hours they spend watching television per week and their grade point average.
the degenerative disease osteoarthritis most frequently affects weight-bearing joints such as the knee. the following
Tim has two more problems to solve on his test, but he doesn't know how long it will take to finish them. He assigns mutually irrelevant normal distributions to the times
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