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

Author Question: IQ scores form a normal distribution with = 100 and = 15 . Individuals with IQs between 90 and110 ... (Read 56 times)

rmenurse

  • Hero Member
  • *****
  • Posts: 513
on: Jun 20, 2018
IQ scores form a normal distribution with  = 100 and  = 15 . Individuals with IQs between 90 and110 are classified as average. What proportion of the population is average?
 
  a. 0.7486 c. 0.4972
  b. 0.5028 d. 0.2486

Question 2

IQ scores form a normal distribution with  = 100 and  = 15 . Individuals with IQs above 140 are classified in the genius category. What proportion of the population consists of geniuses?
 
  a. 0.9962 c. 0.4962
  b. 0.5038 d. 0.0038


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Chou

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Jun 20, 2018
Answer to Question 1

C

Answer to Question 2

D


rmenurse

  • Member
  • Posts: 513
Reply 2 on: Jun 20, 2018
Wow, this really help

xiazhe

  • Member
  • Posts: 331
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Sample inventory order form. Sample inventory order form.
The Distribution of Dominant and Minority Groups The Distribution of Dominant and Minority Groups
An oscillating needle 1 or 2 inches Hg below normal could indicate an incorrect air–fuel mixture ... An oscillating needle 1 or 2 inches Hg below normal could indicate an incorrect air–fuel mixture ...
World Distribution of Temperature World Distribution of Temperature
Population distribution (dispersion) Population distribution (dispersion)
How did you give birth? C section vs. Normal Delivery How did you give birth? C section vs. Normal Delivery
Video: Conjunctivitis

For a complete list of videos, visit our video library