Calculations with Mean and Standard Deviation
The verbal part of the SAT has a mean of 500 and a standard deviation of 100. If we randomly selected 1500 students who had taken the the verbal SAT how many would score lower than 250?
Solution. If the verbal sat X has a mean of 500 and a standard deviation of 100, then the probability that the score is lower than 250 is
This solution discusses the calculations of scores based on mean and standard deviation.