Warren County Telephone Company claims in its annual report that the typical customer spends $62 per month on local and long-distance service. A sample of 12 subscribers revealed the following amounts spent last month.

$64

$67

$64

$69

$57

$64

$69

$63

$64

$55

$55

$67

Develop a 95% confidence interval for the population mean. (Use t Distribution Table.)(Round your answers to 3 decimal places.)