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

Author Question: Given a normally distributed variable with a mean of 70 and a standard deviation of 10, which of the ... (Read 30 times)

Mimi

  • Hero Member
  • *****
  • Posts: 542
on: Jul 12, 2018
Given a normally distributed variable with a mean of 70 and a standard deviation of 10, which of the following is the most appropriate statement?
 
  A. 50 of all cases fall within one standard deviation of the mean.
  B. Approximately 95 of all cases fall within the range 60 to 80.
  C. Approximately 68 of all cases fall within the range 60 to 80.
  D. None of the above is correct.

Question 2

Lets say that after this exam is graded, you receive a percentage on the exam and a Z-score. Lets say that your Z-score for this exam is 3.0. In comparison with other students scores, would this mean that you did really well on the exam, really badly on the exam, or about the same as most people?
 
  A. You did really well on the exam in comparison with others.
  B. You did really badly on the exam in comparison with others.
  C. You were about the same as most other students.
  D. It cant be determined on the basis of this information.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Eazy416

  • Sr. Member
  • ****
  • Posts: 360
Reply #1 on: Jul 12, 2018
Answer to Question 1

C.

Answer to Question 2

A.


Mimi

  • Member
  • Posts: 542
Reply 2 on: Jul 12, 2018
Great answer, keep it coming :)

alexanderhamilton

  • Member
  • Posts: 334
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Variable expressivity Variable expressivity
The nurse is using Standard Precautions to draw blood. The nurse is using Standard Precautions to draw blood.
Refraction Through Uniform and Variable Thickness Glasses Refraction Through Uniform and Variable Thickness Glasses
How to quickly determine the maximum or minimum value of a quadratic equation in standard form How to quickly determine the maximum or minimum value of a quadratic equation in standard form
What Is a Standard Drink? What Is a Standard Drink?
The Standard Rain Gauge The Standard Rain Gauge
Video: What are Strong & Weak Acids and How they're different?

For a complete list of videos, visit our video library