Reference no: EM131786472

A savings and loan association needs information concerning the checking account balances of its local customers. A random sample of 14 accounts was checked and yielded a mean balance of $664.14 and a standard deviation of $297.29. Find an appropriate (t or z) 95% confidence interval for the true mean checking account balance for local customers.

A) $508.41 < μ < $819.87
B) $492.49 < μ < $835.79
C) $453.59 < μ < $874.69
D) $493.71 < μ < $834.57
E) $451.47 < μ < $876.81