Mathematics, 20.03.2021 02:30 adiboo2004

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): 115, 370, 250, 593, 540, 225, 177, 425, 318, 182, 275, and 228. a. Construct a 90% confidence interval estimate for the standard deviation of family dental expenses for all employees of this corporation.

b.
Construct a 95% confidence interval estimate for the standard deviation of family dental expenses for all employees of this corporation.

c. Construct a 99% confidence interval estimate for the standard deviation of family dental expenses for all employees of this corporation

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 21:30, michaelgg7166

Can someone explain to me how to do

Answers: 1

continue

Mathematics, 21.06.2019 23:40, hannahbannana98

Statement reason 1. δabc is similar to δced. given 2. 3. definition of slope 4. slope of slope of definition of slope 5. slope of × slope of multiplying the slopes 6. slope of × slope of substitution property of equality 7. slope of × slope of simplifying the right side the table contains the proof of the relationship between the slopes of two perpendicular lines. what is the reason for statement 2? a. parallel line segments that meet a common perpendicular line are proportional in length. b. the lengths of vertical and horizontal sides in congruent triangles are in a common ratio. c. trigonometric identities determine the lengths of the legs in a right triangle. d. corresponding side lengths in similar triangles are proportional in length.

Answers: 2

continue

Mathematics, 22.06.2019 00:00, Geo777

How many quarts of a 50% solution of acid must be added to 20 quarts of a 20% solution of acid in order to get a 40% solution of acid?

Answers: 2

continue

Mathematics, 22.06.2019 01:00, mdegracia73

The actual length of side t is 0.045cm. use the scale drawing to find the actual side length of w

Answers: 1

continue

You know the right answer?

The personnel department of a large corporation wants to estimate the family dental expenses of its...