Five university students were given an English achievement test before and after receiving instruction in basic...

Five university students were given an English achievement test before and after receiving instruction in basic grammar. Their scores are shown below: Student Before After A 20 18 B 18 22 C 17 15 D 16 17 E 12 9

Should we conclude that future students would show higher scores after instruction? Use the .05 significance level. Use hypothesis testing.

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