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Unformatted text preview: MGT 2250 — Quiz #23
2 Sides Answers : 1) Management at a magazine designed for young adult readers had been
operating under the assumption that the average age of its readers is 28 years
old. Some newer members of the management team believe that average age
of the readers is actually younger than 28. They proposed that a study he
conducted to test if they are correct in this belief. A sample of n=100 readers
was polled as to their age. The standard deviation of the population was
assumed to be 5 years. a) Formulate the null and alternative hypotheses for this proposed study. {A W,
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I b) At alpha = 0.05, what is the probability of making a Type II
error if the true population mean is 26 Years? What is the
power of the test? See following sheets c) At alpha = 0.05, what is the probability of making a Type II
error if the true population mean is 27 Years? What is the
power of the test? See following sheets d) At alpha = 0.05, what is the probability of making a Type 11
error if the true population mean is 27.5 Years? What is the
power of the test? See following sheets X] I].
I 1/ ’5’ if” e) If management were willing to accept a beta = .05 at alpha =
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This note was uploaded on 02/05/2012 for the course MGT 2250 taught by Professor Milne during the Summer '08 term at Georgia Institute of Technology.
 Summer '08
 Milne

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