Mathematics, 15.04.2020 20:44 carsonbake

The Graduate Management Admission Test (GMAT) is a test required for admission into many masters of business administration (MBA) programs. Total scores on the GMAT are normally distributed and historically have a population standard deviation of 113. The Graduate Management Admission Council (GMAC), who administers the test, claims that the mean total score is 529.

Suppose a random sample of 8 students took the test, and their scores are given below.

699

560

514

570

521

663

727

513

How many students should be surveyed to estimate the mean score within 25 points with 98% confidence?

How many students should be surveyed to estimate the mean score within 25 points with 90% confidence?

Compare your answers from questions 5 and 6. What effect does decreasing the confidence level have on the sample size required?

Answers: 1

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 17:50

Adriana sold 50 shares of a company’s stock through a broker. the price per share on that day was $22.98. the broker charged her a 0.75% commission. what was adriana’s real return after deducting the broker’s commission? a. $8.62 b. $229.80 c. $1,140.38 d. $1,149.00

Answers: 1

Answer

Mathematics, 21.06.2019 21:40

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.

Answers: 3

Answer

Mathematics, 21.06.2019 23:30

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b

Answers: 3

Answer

Mathematics, 22.06.2019 02:30

Solve the system of equations. 2x-2y=-4 and x+y=8. show work

Answers: 1

Answer

You know the right answer?

The Graduate Management Admission Test (GMAT) is a test required for admission into many masters of...