Question

Assume that adults have iq scores that are normally distributed with a mean of 0.105 and a standard deviation id 15. Find the probability that randomly selected adult has an iq less than 126

Answer 1

Answer:

0.9192

Step-by-step explanation:

Assume that adults have iq scores that are normally distributed with a mean of 105 and a standard deviation id 15. Find the probability that randomly selected adult has an iq less than 126

Mean = 105

Standard Deviation = 15

Value = 126

=> Z =  ( Value - Mean)/Standard Deviation

=> Z = (126 - 105)/15

=> Z = 21/15

=> Z = 7/5

=> Z = 1.4

Z score = 1.4 => 0.9192

0.9192 people have score less than 126

probability that randomly selected adult has an iq less than 126 = 0.9192