A machine to measure the bounce of a ball is used on 45 randomly selected tennis balls.
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A machine to measure the bounce of a ball is used on 45 randomly selected tennis balls. Experience has shown that the standard deviation of the bounce is .30. If X¯ = 1.70, and assuming normality, what is a .90 confidence interval for the average bounce?
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Related Book For 
Basic Statistics Understanding Conventional Methods And Modern Insights
ISBN: 9780195315103
1st Edition
Authors: Rand R. Wilcox
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