Register
Scores on an exam are normally distributed with a mean of 76 and a standard deviation of 10. In a group of 230 tests, how many students score above 96? A. about 31 students B.about 14 students C.about
16.4k views
5 votes
Scores on an exam are normally distributed with a mean of 76 and a standard deviation of 10. In a group of 230 tests, how many students score above 96?

A. about 31 students

B.about 14 students

C.about 6 students

D.about 2 students



User Shoe
by
5.9k points

1 Answer

2 votes
C) about 6 students, This is because each standard deviation is 10 so two deviations up = 96, meaning that 2.3% of the people scored above and 2.3% times 230 people is 5.29, so about 6 students.
User John Gilmer
by
5.1k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

6.4m questions

8.4m answers

Other Questions

What is the least common denominator of the four fractions 20 7/10 20 3/4 18 9/10 20 18/25
What is 0.12 expressed as a fraction in simplest form
Solve using square root or factoring method plz help!!!!.....must click on pic to see the whole problem
What is distributive property ?
What is the measure of xyz
Link Copied!