On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 100 and a standard deviation of 18. Suppose one individual is randomly chosen. Let X = IQ of an individual.
AWhat is the distribution of X? X ~ N(
100
Correct,
18
Correct)
BFind the probability that a randomly selected person's IQ is over 102.
Round your answer to 4 decimal places.
CA 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.
DFind the Inter Quartile Range (IQR) for IQ scores. Round your answers to 2 decimal places.
Q1:
88.55
Incorrect
Q3:
111.45
Incorrect
IQR:
22.9
Incorrect
AWhat is the distribution of X? X ~ N(
Correct,
18
Correct)
BFind the probability that a randomly selected person's IQ is over 102.
CA 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?
DFind the Inter Quartile Range (IQR) for IQ scores. Round your answers to 2 decimal places.
88.55
Incorrect
Q3:
111.45
Incorrect
IQR:
22.9
Incorrect