Register

Suppose the scores of students on an exam are normally distributed with a mean of 244 and a standard deviation of 79. According to the empirical rule, what percentage of student…

Suppose the scores of students on an exam are normally distributed with a mean of 244 and a standard deviation of 79. According to the empirical rule, what percentage of student…
20.8k views
5 votes
Suppose the scores of students on an exam are normally distributed with a mean of 244 and a standard deviation of 79. According to the empirical rule, what percentage of students scored between 165 and 323 on the exam?

User Nikola Kolev
by
8.2k points

1 Answer

6 votes
244 - 165 = 79 . . . . one standard deviation
323 - 244 = 79 . . . . one standard deviation

The range of scores is ±1 standard deviation from the mean. The empirical rule says
68% of scores lie in that range.
User Andrew Keller
by
8.4k points
← Prev Question Next Question →

No related questions found

Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories

Other Questions

What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
Link Copied!