The mean score on a certain standardized test is 500, with a standard deviation on 75. Jessie scored in the 75th percentile. What was Jessie's score and the z score?
Please help as soon as possibel. thx
They should have given you some sort of formula for converting between z-score and the mean "mu" and standard deviation "sigma".The mean score on a certain standardized test is 500, with a standard deviation on 75. Jessie scored in the 75th percentile. What was Jessie's score and the z score?