IQ scores are normally distributed with a mean = 100 and a standard deviation =

Question:

IQ scores are normally distributed with a mean μ = 100 and a standard deviation σ = 15.
Based on this distribution, determine
a. The percentage of IQ scores between 100 and 120.
b. The probability of selecting a person at random having an IQ between 100 and
120.
c. The percentage of IQ scores between 88 and 100.
d. The probability of selecting a person at random having an IQ between 88 and
100.
e. The percentage of IQ scores that are 110 or above.
f. The probability of selecting a person at random having an IQ of 110 or above.