A study conducted a few years ago concluded that adult males in Poduck spend an average of less than
Question: A study conducted a few years ago concluded that adult males in Poduck spend an average of less than 13 hours a week working, with a population standard deviation of 1.5 hours. A recent sample done by Poduck Census Group of 55 men, found that they averaged 15 hours per week. With a = 0.05 can you conclude that the mean number of hours they spend working has increased?
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