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.

dental expense data.xlsx Construct a 97% confidence interval estimate for the average family dental expenses for all employees of this corporation. Place your LOWER limit, in dollars rounded to 2 decimal places, in the first blank. Do not use a dollar sign, a comma, or any other stray mark. For example, 123.45 would be a legitimate entry.___ Place your UPPER limit, in dollars rounded to 2 decimal places, in the second blank. Do not use a dollar sign, a comma, or any other stray mark. For example, 567.89 would be a legitimate entry.___

115

370

250

593

540

225

177

425

318

182

275

228