Question

The distribution of scores on the SAT is approximately normal with a mean of μ = 500 and a standard deviation of σ = 100. For the population of students who have taken the SAT: What proportion have SAT scores less than 400? What proportion have SAT scores greater than 650? What is the minimum SAT score needed to be in the highest 20% of the population? If the state college only accepts students from the top 40% of the SAT distribution, what is the minimum SAT score needed to be accepted?

Answer 1