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Chapter 7: The Central Limit Theorem

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Introductory Statistics
Pages: 399 - 442
Introductory Statistics

Introductory Statistics

Book edition OER 2018
Author(s) Barbara Illowsky, Susan Dean
Pages 902 pages
ISBN 9781938168208

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Illustration

123 Questions for Chapter 7: The Central Limit Theorem

  1. In a city,46 percent of the population favor the incumbent, Dawn Morgan, for mayor. A simple random sample of 500is taken. Using the continuity correction factor, find the probability that at least 250favor Dawn Morgan for may

    Found on Page 417

  2. What is the mean, standard deviation, and sample size?

    Found on Page 426

  3. Use the following information to answer the next six exercises: Yoonie is a personnel manager in a large corporation. Each month she must review 16 of the employees. From past experience, she has found that the reviews take her approximately four hours each to do with a population standard deviation of 1.2hours. Let Xbe the random variable representing the time it takes her to complete one review. Assume Xis normally distributed. Let Xbe the random variable representing the mean time to complete the 16 reviews. Assume that the 16 reviews represent a random set of revi

    Found on Page 426

  4. Find the sum that is 1.5 standard deviations below the mean of the sums.

    Found on Page 428

  5. Find the probability that the sum of the 40 values is greater than7,500.

    Found on Page 428

  6. Find the probability that the sum of the 40 values is less than 7,000.

    Found on Page 428

  7. Find the sum that is one standard deviation above the mean of the sums.

    Found on Page 428

  8. Find the sum that is 1.5 standard deviations below the mean of the sums.

    Found on Page 428

  9. Find the percentage of sums between1.5standard deviations below the mean of the sums and one standard deviation above the mean of the sums.

    Found on Page 428

  10. Find the percentage of sums between 1.5 standard deviations below the mean and one standard deviation above the mean.

    Found on Page 428

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