Question:
Scores on a test are approximately normally distributed
Last updated: 7/9/2022
![Scores on a test are approximately normally distributed](https://media.kunduz.com/media/sug-question/raw/61281186-1657363249.3457725.jpeg?h=512)
Scores on a test are approximately normally distributed with a mean of 70 and a standard deviation of 9. The teacher wants to give A's to the top 10% of students, B's to the next 20%, and C's to the next 40%. What is the cutoff for an C grade? (Round your answer to the nearest whole number).