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Statistics / Elementary Statistics: A Step by Step Approach 8th ed. 8 / Chapter 8-4 / Problem 8

Elementary Statistics: A Step by Step Approach 8th ed. | 8th Edition | ISBN: 9780073386102 | Authors: Allan G Bluman Professor Emeritus

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Female Physicians The percentage of physicians who are

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QUESTION:

Female Physicians The percentage of physicians who are women is 27.9%. In a survey of physicians employed by a large university health system, 45 of _pq_n 120 randomly selected physicians were women. Is there sufficient evidence at the 0.05 level of significance to conclude that the proportion of women physicians at the university health system exceeds 27.9%? Source: New York Times Almanac.

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QUESTION:

Female Physicians The percentage of physicians who are women is 27.9%. In a survey of physicians employed by a large university health system, 45 of _pq_n 120 randomly selected physicians were women. Is there sufficient evidence at the 0.05 level of significance to conclude that the proportion of women physicians at the university health system exceeds 27.9%? Source: New York Times Almanac.

ANSWER:

Step 1 of 4

Denote appropriate null and alternative hypothesis from the claim given in the exercise:

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