Question

Question 14 options: 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 in 2004 reveals the following family dental expenses (in dollars): 115, 370, 250, 93, 540, 225, 177, 425, 318, 182, 275, and 228. The sample mean is

Answer 1

The sample mean is of 266.5 dollars.

Explanation:

Sample mean:

The sample mean is given by the sum of all values in the sample divided by the number of values.

In this question:

12 values.

The sum is:

115 + 370 + 250 + 93 + 540 + 225 + 177 + 425 + 318 + 182 + 275 + 228 = 3198

The sample mean is:

The sample mean is of 266.5 dollars.