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QUESTION
A random sample of 15 Rocky Mountain Credit Union checking account balance indicated a sample mean of $1396.60 with a standard deviation of $256.0. A 95% confidence interval for the mean checking acco
A random sample of 15 Rocky Mountain Credit Union checking account balance indicated a sample mean of $1396.60 with a standard deviation of $256.0. A 95% confidence interval for the mean checking account balance is (a) $1336.50 to 1486.90 (b) $1265. 76 to 1356.89 (c) $1254.80 to 1538.40 (d) $1396.60 to 1530.98 (e) $1287.50 to 16.30.78
