SOLUTION: The Intelligence Quotient (IQ) test scores are normally distributed with a mean of 100 and a standard deviation of 12. What is the probability that a person would score between 1
Algebra ->
Probability-and-statistics
-> SOLUTION: The Intelligence Quotient (IQ) test scores are normally distributed with a mean of 100 and a standard deviation of 12. What is the probability that a person would score between 1
Log On
Question 1158330: The Intelligence Quotient (IQ) test scores are normally distributed with a mean of 100 and a standard deviation of 12. What is the probability that a person would score between 109.1 and 129.3? Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! z=(x-mean)/sd
=(109.1-100)/12 =0.76
and
(129.3-100)/12=2.44
the probability of z between those two values is 0.2163
