A random sample of 21 ncaa division i mens basketball games, Ask an Expert

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A random sample of 21 NCAA Division I men's basketball games during the 2009-2010 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) What assumptions need to be made about this population?

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