In 2003, the Accreditation Council for Graduate Medical Education (ACGME) implemented new rules limiting work hours for all residents. A key component of these rules is that residents should work no more than 80 hours per week. The following is the number of weekly hours worked in 2017 by a sample of residents at the Tidelands Medical Center.

a. What is the point estimate of the population mean for the number of weekly hours worked at the Tidelands Medical Center?

b. Develop a 90% confidence interval for the population mean.

c. Is the Tidelands Medical Center within the ACGME guideline? Why?

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