Answer: 0.6827
Step-by-step explanation:
Given : Mean IQ score :
Standard deviation :
We assume that adults have IQ scores that are normally distributed .
Let x be the random variable that represents the IQ score of adults .
z-score :
For x= 90
For x= 120
By using the standard normal distribution table , we have
The p-value :
Hence, the probability that a randomly selected adult has an IQ between 90 and 120 =0.6827
Answer:
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Answer:
A
Step-by-step explanation:
A
Answer:
27
Step-by-step explanation:
57 - 3 = 54. 54/2 = 27.
first is 86
we know because of the sum of the interior angles of a triangle being 180, and that 5 + 6 =180