Suppose that the average IQ score is normally distributed wi

Suppose that the average IQ score is normally distributed with a mean of 115 and a standard deviation of 16. In addition to providing the answer, state the relevant Excel commands. (Use Excel)

What is the probability a randomly selected person will have an IQ score of less than 80? (Round your answer to 4 decimal places.)

What is the probability that a randomly selected person will have an IQ score greater than 100?(Round your answer to 4 decimal places.)

What minimum IQ score does a person have to achieve to be in the top 3.7% of IQ scores? (Round your answer to 2 decimal places.)

Please show all work.

Solution

a.

b.

c.