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    Test of hypothesis using dependent samples

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    A group of 10 students was pretested before instruction and posttested 6 weeks of instruction with the following achievement scores:

    Student Before After Difference

    1 14 17 3
    2 12 16 4
    3 20 21 1
    4 8 10 2
    5 11 10 -1
    6 15 14 -1
    7 17 20 3
    8 18 22 4
    9 9 14 5
    10 7 12 5

    Is there evidence of an improvement in achievement over this 6-week period? Justify using an appropriate statistical test.

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    https://brainmass.com/statistics/hypothesis-testing/test-hypothesis-using-dependent-samples-32956

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    Tests differences between means with dependent samples.

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