Register
In a large biology class, the scores of the final exam were approximately normally distributed with the mean 80.5 and standard Deviation 9.9. What proportion of final exam scores were greater than 68.3
215k views
5 votes
In a large biology class, the scores of the final exam were approximately normally distributed with the mean 80.5 and standard Deviation 9.9. What proportion of final exam scores were greater than 68.3

User Kksensei
by
8.5k points

1 Answer

3 votes
The standardized z score is 68.3 - 80.5
-------------- = -1.263
9.9

Referring to the Standard Normal Curve tables
proportion greater than 68.3 = 1 - 0.3966 = 0.603

or 60.3%
User Shameka
by
8.6k 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

Other Questions

How do you can you solve this problem 37 + y = 87; y =
How do you estimate of 4 5/8 X 1/3
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Write words to match the expression. 24- ( 6+3)
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
Link Copied!