Question

On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 117 and a standard deviation of 14. Suppose one individual is randomly chosen. Let X = IQ of an individual. a. What is the distribution of X? X - N( 117 196 b. Find the probability that a randomly selected person's IQ is over 125. 0.5714 Round your answer to 4 decimal places. C. A school offers special services for all children in the bottom 5% for IQ scores. What is the highest IQ score a child can have and still receive special services? Round your answer to 2 decimal places. d. Find the Inter Quartile Range (IQR) for IQ scores. Round your answers to 2 decimal places. 01: 03: JOR:

Answer 1

Part a

For this case the answer would be:

`\text{X N(117,14)}`

Part b