A random sample of size 20 yields and s2 1.45. Calculate a confidence interval for the

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A random sample of size 20 yields and s2 1.45. Calculate a confidence interval for the population mean whose confidence level is as follows:

a. 0.99

b. 0.98

c. 0.95

d. 0.90

e. 0.80

f. What assumptions were necessary to establish the validity of the confidence intervals calculated in parts a through e?

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Business Statistics A Decision Making Approach

ISBN: 9780136121015

8th Edition

Authors: David F. Groebner, Patrick W. Shannon, Phillip C. Fry, Kent D. Smith

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Question Posted: Sep 21, 2024 10:03 AM

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A random sample of size 20 yields and s2 1.45. Calculate a confidence interval for the

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Business Statistics A Decision Making Approach

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