On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 111 and a standard deviation of 15. Suppose one individual is randomly chosen. Let X = IQ of an individual.Round all your answers to 2 decimal places if necessary.

a. What is the distribution of X? X ~ N(blank , blank)

b. Find the probability that a randomly selected person's IQ is over 99.

c. A school offers special services for all children in the bottom 3% for IQ scores. What is the highest IQ score a child can have and still receive special services?

d. Find the Inter Quartile Range (IQR) for IQ scores.

Q1:

Q3:

IQR: