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12. Teachers' Salaries in North Dakota The average teacher's salary in North Dakota is $37,764. Assume a normal distribution with o = $5100. a. What is the probability that a randomly selected teacher's salary is greater than $45,000? b. For a sample of 75 teachers, what is the probability that the sample mean is greater than $38,000?

12. Teachers' Salaries in North Dakota The average teacher's salary in North Dakota is $37,764. Assume a normal distribution with o = $5100. a. What is the probability that a randomly selected teacher's salary is greater than $45,000? b. For a sample of 75 teachers, what is the probability that the sample mean is greater than $38,000?

Algebra and Trigonometry (MindTap Course List)
Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter14: Counting And Probability
Section14.CR: Chapter Review
Problem 5CC: a What is meant by an experiment? Sample space? b What is an event? c Define the probability of an...
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12. Teachers' Salaries in North Dakota The average teacher's salary in North Dakota is $37,764. Assume a normal distribution with o = $5100. a. What is the probability that a randomly selected teacher's salary is greater than $45,000? b. For a sample of 75 teachers, what is the probability that the sample mean is greater than $38,000?
Transcribed Image Text:12. Teachers' Salaries in North Dakota The average teacher's salary in North Dakota is $37,764. Assume a normal distribution with o = $5100. a. What is the probability that a randomly selected teacher's salary is greater than $45,000? b. For a sample of 75 teachers, what is the probability that the sample mean is greater than $38,000?
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