According to J.D. Power & Associates, the mean purchase price of a smartphone device (such as an
Question:
(a) At α = .05, has the mean purchase price decreased? State the hypotheses and decision rule clearly.
(b) Use Excel to find the p-value and interpret it.
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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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