A federal bank examiner is interested in estimating the mean outstanding defaulted loans balance of all defaulted loans over the last three years. A random sample of 20 defaulted loans yielded a mean of $67,918 with a standard deviation of $16,552.40. Calculate a 90 percent confidence interval for the mean balance of defaulted loans over the past three years.
Multiple Choice
[66,487, 69,349]
[61,518, 74,318]
[61,829, 74,007]
[39,299, 96,537]
[57,329, 78,507]