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Author Question: IQ scores form a normal distribution with = 100 and = 15 . Individuals with IQs between 90 and110 ... (Read 66 times)

rmenurse

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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


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Chou

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Reply #1 on: Jun 20, 2018
Answer to Question 1

C

Answer to Question 2

D


rmenurse

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Reply 2 on: Jun 20, 2018
Great answer, keep it coming :)

bblaney

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Reply 3 on: Yesterday
Excellent

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