The personnel department of a large corporation wants to estimate the family dental expenses of its employees to determine the feasibility of providing a dental insurance plan. A random sample of 12 employees reveals the following family dental expenses (in dollars).

See Attached Excel for Data.

Construct a 97% confidence interval estimate for the averagefamily dental expenses for all employees of this corporation.

Numbers for data are below (in dollars).

115, 370, 250, 593, 540, 225, 177, 425, 318, 182, 275, 228