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worty [1.4K]
3 years ago
15

Assume that adults have IQ scores that are normally distributed with a mean of and a standard deviation . Find the probability t

hat a randomly selected adult has an IQ less than . The probability that a randomly selected adult has an IQ less than is
Mathematics
1 answer:
Tcecarenko [31]3 years ago
3 0

Answer:

the probability when the IQ is lower than 136 is 0.9641

Step-by-step explanation:

Given that

The mean is 100

The standard deviation is 20

We need to find out the probability when the IQ is lower than 136

So,

z value equivalent to 136 = (136 - 100)  ÷ 20 = 1.8

Now  

p (z < 1.8) = 0.9641

hence, the probability when the IQ is lower than 136 is 0.9641

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