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Candidates for employment at a city fire department are required to take a written aptitude test. Scores on this test are normally distributed with a mean of 260 and a standard deviation of 51. A random sample of 9 test scores is taken.

(1) What are the mean and standard error of the sample mean scores?

(2) What is the probability that the sample mean score is less than 250?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9102510

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