If 95% of the population has an IQ between 70 and 130, what is the probability of meeting a person with an IQ either higher than 130 or lower than 70?

lwfrgin

lwfrgin

Answered question

2020-11-08

If 95% of the population has an IQ between 70 and 130, what is the probability of meeting a person with an IQ either higher than 130 or lower than 70?

Answer & Explanation

curwyrm

curwyrm

Skilled2020-11-09Added 87 answers

Sum of all the probabilities is = 1
So, P(x<70)+p(70<x<130)+p(x>130)=1
It is given that
p(70<x<130)=0.95
So, P(x<70)+p(x>130)=10.95=0.05

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