SOLUTION: B)If IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. - Is it unusual to get a mean IQ score that is less then 97, if 16 IQ scores are rando

Algebra.Com
Question 430252: B)If IQ scores are normally distributed with a mean of 100 and a standard deviation of 15.
- Is it unusual to get a mean IQ score that is less then 97, if 16 IQ scores are randomly selected?. Explain please.
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!
 

Hi

P(<97)  then z = -3/15 = -.2 and P(z = -.2) = .4207 or 42% generally are <97

 .42*16 = 6  Not unusual 

RELATED QUESTIONS


B)If IQ scores are normally distributed with a mean of 100 and a standard deviation of... (answered by ewatrrr)

IQ scores of adults are normally distributed with a mean of 100 and a standard deviation... (answered by stanbon,ewatrrr)

IQ scores on the Stanford-Binet Intelligence Test are normally distributed with a mean... (answered by Boreal,rothauserc)

IQ scores on the Stanford-Binet Intelligence Test are normally distributed with a mean... (answered by Boreal)

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If... (answered by stanbon,edjones)

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If... (answered by edjones)

IQ test scores are normally distributed with a mean of 100 and a standard deviation of... (answered by khwang)

Iq test scores are normally distributed with a mean of 100 and a standard deviation of... (answered by Fombitz)

IQ test scores are normally distributed with a mean of 100 and a standard deviation of... (answered by solver91311)