SOLUTION: A standardized IQ test provides a normal distribution of scores with a mean of 100 and a standard deviation of 15 if a score was selected at random from all the people who have tak

Question 852129: A standardized IQ test provides a normal distribution of scores with a mean of 100 and a standard deviation of 15 if a score was selected at random from all the people who have taken the test, which probability would be greater: selecting a score of less than 95 or selecting a score greater that 110? why?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi,

Note: 

P(x>110)=  0r 25.25%

P(x < 95) = =  0r 37%



z = -.3333 and z = .6667 are on Opposite Extremes on the Bell shaped curve, z = 0 in the middle

z = -.3333 shows a Greater Area under the Curve to the Left than z = .6667 does to the right as the Probabilities show

 

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