A random sample of 50 recent college graduates results in a mean time to graduate of 4.58
Question:
A random sample of 50 recent college graduates results in a mean time to graduate of 4.58 years, with a standard deviation of 1.10 years.
(a) Compute and interpret a 90% confidence interval for time to graduate with a bachelor’s degree.
(b) Does this evidence contradict the widely held belief that it takes 4 years to complete a bachelor’s degree? Why?
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a We construct a tinterval because we are estimating a population mean a...View the full answer
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