Scores of adults aged 60 to 64 on a common IQ test areapproximately normally dis

Question

Scores of adults aged 60 to 64 on a common IQ test areapproximately normally distributed with mean 90 and standarddeviation 15. What percent of all students scored between 385 and605? Hint: Sketch out this graph and distribution prior toanswering the question. a) 68% b) 95% c) 99.7 % d) 99.0 % Scores of adults aged 60 to 64 on a common IQ test areapproximately normally distributed with mean 90 and standarddeviation 15. What percent of all students scored between 385 and605? Hint: Sketch out this graph and distribution prior toanswering the question. a) 68% b) 95% c) 99.7 % d) 99.0 %

Explanation / Answer

Well from what I know my best guess would be 99.7 % since the ranges they give you are way far away from the mean and the standard deviations are small. tell me if i get it right! :)

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