alleryThree scores are 66, 72, 81. A fourth is an integer from 0 to 100. How many give 75 ≤ mean < 78?
A11 scores
B12 scores
C13 scores
D14 scores
Answer & Solution
Correct answer: B. 12 scores
The first scores total 219, so 300 ≤ 219 + x < 312 gives the twelve integers from 81 through 92.
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