The personnel department of a large corporation employing 3,000 workers wants to estimate the family dental expenses of its employees to determine the feasibility of providing a dental insurance plan.A random sample of 10 employees (stored in the file Dental) reveals the following family dental expenses (in dollars) for the preceding year:
110 362 246 85 510 208 173 425 316 179
Construct a 90% confidence interval estimate for the total family dental expenses for all employees in the preceding year.