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 92 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
Gracias!

sultansheikh

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Ulnar Deviation Ulnar Deviation
Adjusting a valve takes both hands—one to hold the wrench to loosen and tighten the lock nut and ... Adjusting a valve takes both hands—one to hold the wrench to loosen and tighten the lock nut and ...
Standard reduction potentials of the major respiratory electron carriers Standard reduction potentials of the major respiratory electron carriers
How to fully analyze the standard and factored form of a quadratic equation (Question 1) How to fully analyze the standard and factored form of a quadratic equation (Question 1)
Epiphyseal Plate in Long Bone Adolescent bone growth takes place along the epiphyseal plate Epiphyseal Plate in Long Bone Adolescent bone growth takes place along the epiphyseal plate
Assume z is a standard normal random variable. What is the value of z if the area to the right ... Assume z is a standard normal random variable. What is the value of z if the area to the right ...
Video: Introduction to Sickle Cell Anemia

For a complete list of videos, visit our video library