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Meadas company makes shocks. The currently guarantee their shocks for 50,000 miles. The distance traveled before the shocks wear out is normally distributed with mean 63,000 and standard deviation 10,000. What % of shocks will fail at exactly 50,000 miles?
A representative of the Environmental Protection Agency (EPA) wants to select samples from 10 landfills. The director has 15 landfills from which she can collect samples. How many different samples are possible?
Multiple regression equation relating expected travel cost (Y) number of days, (Y (x1) ) number of days on the road and distance traveled (X2).
in the united states the average weight of an adult male is 172 pounds with a standard deviation of 29 pounds. assuming
a professor uses a normal distribution to determine grades from a class of 100 students. the syllabus states that
Students from one large high school had a mean score of 58. Is there evidence to suggest that this high school is inferior?
How can we take this "chart" and use it to find the Regression Equation? What is the equation?
the project manger of a software company requested an analysis of past performance. the assigned analyst compared
a genetic test is used to determine if people have a predisposition for thrombosis which is the formation of a blood
Set up the null and alternative hypothesis to test the researcher's prediction.
Find the probability that a randomly selected student spends between eighty and ninety percent of the time on the test. Find the expected value of X. E(X)
A sample of 64 Atlanta consumers showed a mean quarterly water bill of $51 with a sample standard deviation of $12. At α = .05, does the Atlanta sample support the conclusion that above-average rates exist for this private water system?
If he were to conduct a second study to reduce the maximum error of estimate to 6, about how many hard drives should he include in his new sample?
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