Use the data in Try It Yourself 1 and a 95% confidence level to find the margin

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Use the data in Try It Yourself 1 and a 95% confidence level to find the margin of error for the mean number of hours worked by grocery store employees. Assume the population standard deviation is 7.9 hours.

a. Identify z_c, n, and σ.

b. Find E using z_c, σ, and n.

c. Interpret the results.

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Elementary Statistics Picturing The World

ISBN: 9780321911216

6th Edition

Authors: Ron Larson, Betsy Farber

Question Posted: Nov 24, 2015 07:46 AM

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Use the data in Try It Yourself 1 and a 95% confidence level to find the margin

Question:

Number of hours 26 25 32 31 28 28 28 22 28 25 21 40 32 22 25 22 26 24 46 20 35 22 32 48 32 36 38 32 22 19

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a z c 196 n 30 79 b E z c n ...View the full answer

Elementary Statistics Picturing The World

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