Hourly wages in a particular industry are normally, Ask an Expert

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Hourly wages in a particular industry are normally distributed with a mean of $13.20 and a standard deviation of $2.50. A random sample of 40 workers was taken from a certain firm in this industry, and the sample mean was $12.90. We would like to test the claim that the wages are less than the industry average of $13.20.

What is the alternative hypothesis for this problem (H1)?

What is the value of the test statistic for this problem?

What is the rejection region for testing this claim at = :01?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9112915

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