After six biology tests, Ruben has a mean score of 74. What score does Ruben need...
After six biology tests, Ruben has a mean score of 74. What score does Ruben need on the next test to raise his average (mean) to 76?
Homework Answers
Ruben needs to increase his average by-
= (76*7) MINUS (74*6)
=532 - 444
=88
SO, Ruben needs to score 88 in next test in order to raise his mean to 76.
ASSUMPTION- It has been assumed that each test is seperate and next test will be a seperate test not a group of tests..
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After six biology tests, Ruben has a mean score of 74. What
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