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A trucking company wants to find out if their drivers are still alert after driving long hours. So they give a test for alertness to two

A trucking company wants to find out if their drivers are still alert after driving long hours. So, they give a test for alertness to two groups of drivers. They give the test to 475 drivers who have just finished driving 4 hours or less and they give the test to 635 drivers who have just finished driving 8 hours or more. The results of the tests are given below.

Apr 04 2020 View more View Less

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