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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
20 Dec 2021

Given information

The data are as follows -

  Player 1 Player 2 Player 3 Player 4
Mean score before class 83 78 93 87
Mean score after class 80 80 86 86

Step-by-step explanation

Step 1.

Since the mean scores being obtained are independent. 

Therefore, we use test of two independent means (student's t-distribution).

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