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 86 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
Excellent

Missbam101

  • Member
  • Posts: 341
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

The longest a person has survived after a heart transplant is 24 years.

Bronfenbrenner’s model of the ecological-systems approach to studying development. He suggested that Bronfenbrenner’s model of the ecological-systems approach to studying development. He suggested that
How to quickly find the vertex of a quadratic equation that is in standard form How to quickly find the vertex of a quadratic equation that is in standard form
Subsurface mining takes place in underground tunnels Subsurface mining takes place in underground tunnels
Write the following in standard form Write the following in standard form
Lod Score Values for the Families in Figure 5.15 Lod Score Values for the Families in Figure 5.15
Video: Coaductile pathway, Timing of contraction signal & Conduction system and ECG

For a complete list of videos, visit our video library