Business Major

9.13 THE VIDEO GAME SATISFACTION RATING CASE retract that precise satisfied customers give the XYZ-Box video game dust a military rating that is at least 42. Suppose that the manufacturer of the XYZ-Box wishes to determination the hit-or-miss take in of 65 cheer ratings to provide reason supporting the film that the imagine multiform triumph ratings for the XYZ-Box croak 42. a. Letting u represent the squiffy composite satisfaction rating for the XYZ-Box, set up the trivial hypothesis H and the alternative hypothesis H essential if we wish to establish to provide evidence supporting the claim that u exceeds 42. b. The haphazard sample of 65 satisfaction rating yields a sample mean of x = 42.954. Assuming that q equals 2.64, jailed critical value to tryout H versus H at each of a = .10 .05, .01, and .001. c. Using the information in pop b, calculate the p-value and use it to test H versus H at each of a = .10,.05,.01, and .001 d. How much evidence is there that the mean composite satisfaction rating exceeds 42? 9.22 Concepts How do we descend whether to use a z test or a t test when testing a hypothesis more or less a universe mean? 12.10 A wholesaler has recently developed a computerized sales invoicing system of rules. Prior to implementing this system, a manual system was used.

The dispersal of the number of errors per invoice for the manual system is as follows: misconducts per throwaway 0 1 2 3 to a greater extent Than 3 share of Invoices 87% 8% 3% 1% 1 % after implementation of the computerized ! system, a random sample of 500 invoices gives the followers error distribution: Error per Invoice 0 1 2 3 More Than 3 Number of Invoices 479 10 8 2 1 a. Show that it is appropriate to carry out a chi-square test using these data b. Use the following Excel getup to determine whether the error percentage for the computerized system differ from those for the manual...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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