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1. A distribution of scores is normally distributed with a mean??= 85and a standard deviation s=4. If one score is randomly sampled fromthe distribution, what is the probability that itwill be greater than 96, between 90 and 97 and less than 88?
suppose we obtained data on vein size after application of a nitroglycerin ointment in a sample of 50 patients. the
For the growth-oriented funds the mean increase is $1,090 with a standard deviation of $55. At the 0.01 significance level is there a difference in the mean yield of the two funds?
For six local offices of a large tax preparation firm, the following data describe x 5 service revenues and y 5 expenses for supplies, freight, and postage during the previous tax preparation season:
Use the Poisson distribution to approximate the probability that among 10,000 cars passing through this tunnel, at least one will have a flat tire.
Given the following observations in a two-way classification with a = 3, b = 4, and c = 2, compute the F-statistics used to test that all interactions are equal to zero (Y u = 0), all column means are equal (/Jj = 0), and all row means are equal (a:;..
What is the probability that the mean breaking strength of the 3 untreated specimens is at least 25 pounds greater than the mean strength of the 3 treated specimens?
the barrons big money poll asked 131 investment managers across the united states about their short-term investment
Two student groups of 40 students each scored, respectively, between 45% to 85% (first group) and 55% to 90% (second group) on the test. A paper is randomly chosen from the two groups and shows the score of 78%. What is the probability that the pa..
generate a chart or table that lists a variety of crimes types. your chart should include at least four types of crimes
Assuming that thedistribution has not changed from what it was in the past year, what is the probability that the mean blackness of the spots is less than 1.0?
There are 4 samples of 40 individuals each interviewed to find out how often they visit a fast food restaurant in the week.
the director of advertising for the carolina sun times the largest newspaper in the carolinas is studying the
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