A random sample of 25 items is drawn from a population whose standard deviation is unknown. The
Question:
a. Construct an interval estimate of with 95 percent confidence.
b. Repeat part a assuming that s = 30.
c. Repeat part a assuming that s = 60.
d. Describe how the confidence interval changes as s increases.
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t 025 TINV2T 0524 2064 a or 843808 856192 b or 837616 862384 ...View the full answer
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Related Book For 
Applied Statistics In Business And Economics
ISBN: 9780073521480
4th Edition
Authors: David Doane, Lori Seward
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