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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
10.57 The average take-out order size for Ashoka Curry House restaurant is shown. Assuming equal variances, at α = .05, is there a significant difference in the order sizes? (a) State the hypotheses.
(b) State the decision rule and sketch it. (c) Find the test statistic. (d) Make a decision. (e) Use Excel to find the p-value and interpret it.
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Customer Order Size
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Statistic Friday Night Saturday Night
Mean order size
x¯1 = 22.32
x¯2 = 25.56
Standard deviation s1 = 4.35 s2 = 6.16
Number of orders n1 = 13 n2 = 18
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