Assume that adults have lQ scores that are normally distributed with a mean of 100.9 and a standard deviation 19.5. Find the first quartile Q,, which is the IQ score separating the bottom 25% from the...

Extracted text: Assume that adults have lQ scores that are normally distributed with a mean of 100.9 and a standard deviation 19.5. Find the first quartile Q,, which is the IQ score separating the bottom 25% from the top 75%. (Hint Draw a graph.) The first quartile is (Type an integer or decimal rounded to one decimal place as needed.) Enter your answer in the answer box and then click Check Answer. All parts showing Clear All Check Answer