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A savings and loan association needs information concerning the checking account balances of its local customers....

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 a 95% confidence interval for the true mean checking account balance for local customers.

Use the given degree of confidence and sample data to construct a confidence interval for the population mean μ. Assume that the population has a normal distribution. Round your answer to 2 decimals.

Math   Statistics-And-Probability   
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