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A sample of 45 entrepreneurs worked an average of 52 hours a week. The population is approximately normally distributed with a standard deviation of 20 hours per week. You want to test whether there is sufficient evidence at the α = 0.10 significance level that entrepreneurs work more than 48 hours per week.
(a) Define the parameter to be tested.
(b) What is the null hypothesis (H0)? What is the alternative hypothesis (H1)?
(c) Specify the test statistic and identify its (approximate) distribution if H0 is true.
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