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Answer:
4.4% of the population with IQ between 120 and 125.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 100
Standard Deviation, σ = 15
We are given that the distribution of IQ scores is a bell shaped distribution that is a normal distribution.
a) Let X be a person's IQ score.
Then, density functions for IQ scores is given by:
b) P(population with IQ between 120 and 125.)
Formula:
Answer:
Option (2)
Step-by-step explanation:
Given expression is ÷
We further simplify this expression,
÷
=
=
=
Therefore, will be the quotient of the given expression.
and
for which the given expression is not defined.
Option (2) will be the answer.