4th Edition

ISBN: 9781305093836

Author: HEALEY, Joseph F.

Publisher: Cengage Learning,

Concept explainers

The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of tw…

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Z-Scores

A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow compar…

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Textbook Question

Chapter 5, Problem 5.11P

C J The local police force gives all applicants an entrance exam and accepts only those applicants who score in the top l5% on this test. If the mean score this year is 87 and the standard deviation is 8, would an individual with a score of 110 be accepted?

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Chapter 5 Solutions

Essentials Of Statistics

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C J The local police force gives all applicants an entrance exam and accepts only those applicants who score in the top l5% on this test. If the mean score this year is 87 and the standard deviation is 8, would an individual with a score of 110 be accepted?

Solution Summary: The author explains that an individual with a score of 110 is accepted in the local police force. The normal curve is symmetrical and its mean is equal to the median.

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Chapter 5 Solutions

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