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mr_godi [17]
3 years ago
7

Miss Levans gave her class an exam on which the possible scores were integers from 0 to 100. If the class median was 91 points a

nd the average was 95 points, what was the top score in the class?
Mathematics
1 answer:
Fudgin [204]3 years ago
8 0

Answer:

  100

Step-by-step explanation:

Suppose there are 2n+1 students in the class. If n+1 of them score 91, and n of them score the high score h, for the average to be 95, we must have ...

  91(n+1) +nh = 95(2n+1)

  91n +91 +nh = 190n +95

  nh = 99n +4

  h = 99 +4/n

The high score must be greater than 99. The high score must be 100.

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