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(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.
A. (513.17, 860.33)
B. None of the other choices is correct
Back
C. (487.31, 563.80)
Next
D. (326.21, 437.90)
E. (238.23, 326.41)
FUO.sh
sh the exam.
Let
2001
to.0114
=2.326, Z002 2.054
=2.624, 10.02.14 = 2.264
