The mean score of a competency test is 80 with a standard

Last updated: 6/25/2023

The mean score of a competency test is 80 with a standard deviation of 5 Use the empirical rule to find the percentage of scores between 75 and 85 Assume the data set has a bell shape OA 99 7 OB 95 OC 50 D 68 OOO