Homework Help: math

Posted by Nicci on Sunday, April 4, 2010 at 10:57pm.

A teacher allows the students to each "throw out" their lowest test score in order to increase their
overall grade. The original mean score of 5 tests is 72.8. After the removal of the lowest test, the
mean score becomes 78.5. What is the score of the removed test?

A) 53 B) 50 C) 47 D) 51

math - Ms. Sue, Sunday, April 4, 2010 at 11:06pm
5 * 72.8 = 364

78.5 * 4 = 314

364 - 314 = ?

Answer this Question

Related Questions

social science statistics - a professor was curious to whether the students in a...
hard math - 42 students took a test in school where the passing score was 70. ...
math algebra - 42 students took a test in school where the passing score was 70...
math - 42 students took a test in school where the passing score was 70. the ...
math - 42 students took a test in school where the passing score was 70. the ...
math - 42 students took a test in school where the passing score was 70. the ...
Math - You have a mean score of 86 on 9 quizzes. The teacher decides to drop ...
statistics probability - Alice earned a score of 940 on an IQ test.The mean test...
Information Technology - Develop an algorithm, flow chart and pseudocode that ...
Math - On a test whose distribution is approximately normal with a mean of 50 ...

For Further Reading

First Name:
School Subject:
Answer: