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A two-factor study with two levels of factor A and three levels of factor B uses a separate sample of n = 5 participants in each treatment condition. How many participants are needed for the entire study?
A) 5
B) 10
C) 25
D) 30
Find a 95% confidence interval for the mean µ of the population from which the men were selected.
Find the probability among 6 randomly selected graduates, that at most 2 of them find a job in his or her chosen field within a year.
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Teenage boys is approximately normal with and Levels above 200 warrant attention. Find the probability that a teenage boy has a cholesterol level greater than 215.
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How large a sample should be tested in order to be 99% confident that the true proportion of inedible fish is estimated to within 7%? Use 2.575 as the critical value for a 99% confidence interval.
A company selects five of the machines at random, thinking all are in working condition. What is the probability that all five of the machines are nondefective?
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