The National Center for Education Would Like to Estimate the Average

Multiple Choice

The National Center for Education would like to estimate the average student debt for the state of Ohio with a 90% confidence interval and a margin of error within plus or minus $1,800. Assuming the standard deviation for student debt in this state is $7,500, the required sample size is _________ .

A) 47
B) 80
C) 36
D) 65