Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 24 Apr 2018 My Price 6.00

Electronic Arts

7-39. One of the top-selling video games continues to be Madden NFL 09 published by Electronic Arts. While prices vary widely depending on store, the suggested retail price for this video game is $46. The file entitled Madden contains a random sample of the retail prices paid for Madden NFL 09.

a.     Calculate the sample mean and standard deviation of retail prices paid for Madden NFL 09.

b.    To determine if the average retail price has fallen, assume the population mean is $46, calculate the probability that a sample of size 200 would result in a sample mean no larger than the one calculated in part a. Assume that the sample standard deviation is representative of the population standard deviation.

c.     In part b you used $46 as the population mean. Calculate the probability required in part b assuming that the population mean is $45.75.

d.    On the basis of your calculations in parts b and c, does it seem likely that the average retail price for Madden NFL 09 has decreased? Explain.

Answers

Maurice Tutor
(5)
Status NEW Posted 24 Apr 2018 07:04 PM My Price 6.00

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