A random sample of size 20 yields x = 3.13 and s2 = 1.45. Calculate a confidence

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A random sample of size 20 yields x = 3.13 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

ISBN: 9781292220383

10th Global Edition

Authors: David Groebner, Patrick Shannon, Phillip Fry

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Question Posted: Sep 19, 2024 06:01 PM

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A random sample of size 20 yields x = 3.13 and s2 = 1.45. Calculate a confidence

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Business Statistics

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