10.146 A test concerning some of the fundamental facts about acquired immunodeficiency syndrome (AIDS) was administered to...

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10.146 A test concerning some of the fundamental facts about acquired immunodeficiency syndrome

(AIDS) was administered to two groups, one consisting of college graduates and the other consisting of high school graduates. A summary of the test results follows:

College graduates: n  75, x  77.5, s  6.2 High school graduates: n  75, x  50.4, s  9.4 Do these data show that the college graduates, on average, score significantly higher on the test? Use

  0.05.

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