In a sample survey of professors at the University of Nebraska, 94% of them described themselves as

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In a sample survey of professors at the University of Nebraska, 94% of them described themselves as ‘‘above average” teachers.

(a) What is the sample? What is the population?

(b) Based on the information provided, can we conclude that the study suffers from sampling bias?

(c) Is 94% a good estimate for the percentage of above-average teachers at the University of Nebraska? If not, why not?

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Statistics Unlocking The Power Of Data

ISBN: 9780470601877

1st Edition

Authors: Robin H. Lock, Patti Frazer Lock, Kari Lock Morgan, Eric F. Lock, Dennis F. Lock

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