The daily number of kayaks sold, X, at a water sports store has the probability distribution (a)
Question:
(a) Find the expected number of kayaks sold in a day.
(b) Find the standard deviation of the number of kayaks sold in a day.
(c) Suppose data from the next 64 different days give = .84 and standard deviation s = .40 number of kayaks sold. Can we conclude that the mean number of kayaks sold is greater than it used to be? Test with α = .05.
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f(x) 5 32
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Related Book For
Statistics Principles And Methods
ISBN: 9780470904114
7th Edition
Authors: Richard A. Johnson, Gouri K. Bhattacharyya
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