IQ (the intelligence quotient) is Normally distributed with mean 100 and standard deviation 16. (a) What proportion

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IQ (the intelligence quotient) is Normally distributed with mean 100 and standard deviation 16.

(a) What proportion of the population has an IQ above 120?

(b) What proportion of the population has IQ between 90 and 110?

(c) In the past, about 10% of the population went to university. Now the proportion is about 30%. What was the IQ of the ‘marginal’ student in the past? What is it now?

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Statistics For Economics Accounting And Business Studies

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Question Posted: Aug 25, 2020 08:17 AM

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IQ (the intelligence quotient) is Normally distributed with mean 100 and standard deviation 16. (a) What proportion

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a To find the proportion of the population with an IQ above 120 we need to use the standard normal d...View the full answer

Statistics For Economics Accounting And Business Studies

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