FIT Hypothesis Testing Handout

FIT Hypothesis Testing Handout - Management 5006...

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Management 5006 Probability and Statistics Hypothesis Testing Exercises 1. A certain magazine publisher claims that people spend an average of 34 hours learning a new software program, with a population standard deviation of σ = 19.7 hours. A survey of a random sample of n = 35 readers revealed a sample mean time of 40.58 hours of learning a new software program. Using an alpha of .10, determine if the amount of time spent learning a new software program is significantly different from the claim of 34 hours. Test the null hypothesis that the true mean is 34 hours against the alternative hypothesis that the true mean is not equal to 34 hours. Assume that the data are normally distributed. 2. Management of a certain company argued that unionists were getting paid an average hourly wage of $18.98. The union representatives argue that the average hourly pay is lower. A sample of 250 employees revealed an average of $18.10 with a sample standard deviation of $3.15. Using an alpha of .01, determine if the
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