This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Suppose the mean GMAT score is 550 with a standard deviation of 100 . Hayden takes the GMAT and is ... (Read 59 times)

CharlieWard

  • Hero Member
  • *****
  • Posts: 578
on: Aug 1, 2018
Suppose the mean GMAT score is 550 with a standard deviation of 100 . Hayden takes the GMAT and is told his z-score is 2.5 . Interpret the meaning of a z-score in this context.

Question 2

In 1998, the average age of students at UTC was 22 with a standard deviation of 3.96 . In 1999, the average age was 24 with a standard deviation of 4.08 . In which year do the ages show a more dispersed distribution? Show your complete work and support your answer.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

nguyenhoanhat

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Aug 1, 2018
Answer to Question 1

Since Hayden's z-score is positive, he scored above the mean of 550 . The value, 2.5, indicates he scored 2.5 standard deviations from the mean. One standard deviation is 100, so 2.5 standard deviations is 250 . Therefore, Hayden scored 250 points above the mean of 550, or 800 on the GMAT.

Answer to Question 2

Coefficient of Variation for 1998 = 18
Coefficient of Variation for 1999 = 17
Since 18 > 17, 1998 shows a more dispersed distribution.


CharlieWard

  • Member
  • Posts: 578
Reply 2 on: Aug 1, 2018
YES! Correct, THANKS for helping me on my review

xthemafja

  • Member
  • Posts: 348
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

On average, students in Roman Catholic schools score higher on national tests than students in ... On average, students in Roman Catholic schools score higher on national tests than students in ...
A ring link network reduces the number of wires it takes to interconnect all of the modules. A ring link network reduces the number of wires it takes to interconnect all of the modules.
Cumulative Standard Normal Distribution Cumulative Standard Normal Distribution
How to manually find the mean, variance, and standard deviation for a set of numbers How to manually find the mean, variance, and standard deviation for a set of numbers
Standard reduction potentials of the major respiratory electron carriers Standard reduction potentials of the major respiratory electron carriers
Measuring the client’s weight with a standard platform scale Measuring the client’s weight with a standard platform scale
Video: Structures that affect circulation - kidneys, blood volume and venous tone

For a complete list of videos, visit our video library