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 93% confidence interval estimate for the mean of family dental expenses for all employees of this corporation.

Place your LOWER limit, in dollars rounded to 1 decimal place, in the first blank. Donotuse a dollar sign, a comma, or any other stray mark. For example, 98.4 would be a legitimate entry.___

Place your UPPER limit, in dollars rounded to 1 decimal place, in the second blank. Donotuse a dollar sign, a comma, or any other stray mark. For example, 567.8 would be a legitimate entry.___

115

370

250

593

540

225

177

425

318

182

275

228