Assume that adults have IQ scores that are normally distributed with a mean of 96.4 and a standard deviation 22.4. Find the first quartile Q1​, which is the IQ score separating the bottom​ 25% from the top​ 75%. The first quartile is

Which expression gives the area of the triangle shown below

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

What is the binomial expansion of (2x-3)^5