Twenty students were randomly divided into two equal groups. Group 1 was taught an anatomy course using a standard lecture approach. Group 2 was taught using a computer-assisted approach. The test scores on a comprehensive final exam were as follows:

Test the claim that a computer-assisted approach produces higher achievement (as measured by final exam scores) in anatomy courses than does a lecture approach. Use a _ 0.05 .

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Group 75 83 60 89 92 88 90 55 70 Group 2 77 92 90 85 72 59 5 92 90 79