The mean score of a college entrance test is 500; the standard deviation is 75. The scores are normally distributed. What percent of the students scored below 320?

Question

Quizplus · Accepted Answer

To find the percentage of students who scored below 320, we calculate the z-score: z = (320 - 500) / 75 = -2.4. Using the standard normal distribution table, a z-score of -2.4 corresponds to approximately 0.82% of the data falling below this score.

The Mean Score of a College Entrance Test Is 500;