Answer (Choose 1 answer)
A local bank needs information concerning the checking account balances of its customers. A random sample of 15 accounts was checked.The mean balance was 686.75 with a standard deviation of 256.20. Find a 98% confidence interval for the true mean. Assume that the account balances are normally distributed.
10.01.14 2.624, 10.02:14 = 2.264
Α. (487.31, 563.80)
Β. (326.21, 437.90)
C. (513.17, 860.33)
D. (238.23, 326.41)
E. None of the other choices is correct
Let
20.01 2.326, 2002 = 2.054
FUOn the exam.
