Students completed an paper for grading with a mean = 50 and a standard deviation of 8. Using this information, answer each of the questions below. Clem received a score of 56 on the test. What percentage of students scored less than Clem? Ewald received a score of 40 on the test. What percentage of students scored higher than Ewald? Roscoe received a score of 45 on the test. What percentage of students scored higher than Roscoe? Myrtle received a score of 47 on the test. Buford received a score of 54 on the test. What percentage of student scored between Myrtle and Buford?
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Step 1: Calculate the percentage of students who scored less than Clem (56). Show more…
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Scores on a Math exam were normally distributed with a mean of 67% and a standard deviation of 8. Use this information to determine the following: About what percent of exams were below 75%? About what percent of the exam scores were above 83%? A failing grade on the exam was anything 2 or more standard deviations below the mean. What was the cutoff for a failing score? Approximately what percent of the students failed? About what percent of the students were below 80%? What percent of the students scored at least 63% and at most 83%? What percent of the students scored at least 60% and at most 72%?
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