A researcher claims that standard deviation of the life span of a brand of air conditioner is
Question:
A researcher claims that standard deviation of the life span of a brand of air conditioner is at most 4.6 years.
Determine whether the claim represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that
(a) rejects the null hypothesis?
(b) fails to reject the null hypothesis?
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Related Book For
Elementary Statistics Picturing The World
ISBN: 9781292260464
7th Global Edition
Authors: Betsy Farber, Ron Larson
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