4. The average American last year worked 44 hours per week and a population standard deviation of 7 hours. What percentage of people work at least 50 hours per week? What percentage of people work less than 35 hours per week? How many hours does someone need to work to be in the upper 5% of hours worked per week?

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To answer these questions we can use the properties of the normal distribution 1 Percentage of peopl... View the full answer