# Normal distribution & Probability

(i) Find the probability that his/her grade is greater than 90.

(ii) Find the probability that his/her grade is less than 50.

(iii) Find the probability that his/her grade is between 50 and 75.

(iv) Approximately, how many students have grades greater than 75.

Emmadavis

34

## Answer

**Answers can only be viewed under the following conditions:**

- The questioner was satisfied with and accepted the answer, or
- The answer was evaluated as being 100% correct by the judge.

Erdos

4.7K

The answer is accepted.

Join Matchmaticians Affiliate Marketing
Program to earn up to a 50% commission on every question that your affiliated users ask or answer.

- answered
- 479 views
- $20.00

### Related Questions

- Operational research : queueing theory
- Statistics Probability
- applied probability
- Question about sample size calculation for a single arm long term follow-up study
- How do we describe an intuitive arithmetic mean that gives the following? (I can't type more than 200 letters)
- Probability and Statistics Question help please
- Statistics tasks
- Chi square test for association in Jamovi in inferential statistics