# 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.

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.

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