A random sample of 21 NCAA Division I men s basketball
A random sample of 21 NCAA Division I men’s basketball games during a recent season had an average attendance of 5,038 with a sample standard deviation of 1,755.
a. Construct a 90% confidence interval to estimate the ­average attendance of an NCAA men’s basketball game during the 2009– 2010 season.
b. Verify this interval using Excel.
c. What assumptions need to be made about this population?
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