A random sample was selected from a population having a normal distribution. Calculate a 90% confidence interval
Question:
A random sample was selected from a population having a normal distribution. Calculate a 90%
confidence interval estimate for m for each of the following situations:
a. x = 134, n = 10, s = 3.1
b. x = 3,744, n = 120, s = 8.2
c. x = 40.5, n = 9, s = 2.9
d. x = 585.9, x2 = 15,472.37, n = 27
(Hint: Refer to Equation 3.13.)
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Related Book For
Business Statistics
ISBN: 9781292220383
10th Global Edition
Authors: David Groebner, Patrick Shannon, Phillip Fry
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