SOLUTION: In the general population, 4% of the world has an IQ higher than 130 (with an IQ of 100 as the average for the general population). What is the probability that a person picked at

Question 1174519: In the general population, 4% of the world has an IQ higher than 130 (with an IQ of 100 as the average for the general population). What is the probability that a person picked at random will have an IQ less than or equal to 130?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!


Hi

 4% (0r .04)of the world has an IQ higher than 130 (>130)
person picked at random will have an IQ less than or equal to 130? 
 P(x ≤ 130 ) = .96 

  Below Picturing 100% of the Area under the Standard Normal curve
 In this case we have it divided:  .04 + .96  Or 4%  and 96%

Standard Normal Curve (μ=0 &  σ=1 )demonstrating various standard deviations

For the normal distribution: 
one  standard deviation from the mean accounts for about 68.2% of the set 
two standard deviations from the mean account for about 95.4%
and three standard deviations from the mean account for about 99.7%.

Wish You the Best in your Studies.

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