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MA 321 Data Analysis Test 1

An investigator is interested in the effects of sleep deprivation on memory function. She randomly assigns each of 20 participants to one of four groups. Five subjects take the test of memory functions after they have been awake for 8 hours. (No sleep deprivation). Five subjects take the test after they have been awake for 18 hours (Mild sleep deprivation). Five subjects take the test after they have been awake for 24 hours (Moderate sleep deprivation). Five subjects take the test after they have been awake for 48 hours (Severe sleep deprivation). Higher score on the test of memory function indicate higher levels of performance.

The investigator predicts that an overall effect of sleep deprivation on memory functions will be observed. He predicts that people with at least some sleep deprivation will perform significantly more poorly than people who have not been sleep deprived. He also predicts that people who have been deprived of sleep for 24 hours will perform significantly more poorly than people who have been deprived of sleep for 18 hours. He also predicts that people who have been deprived of sleep for 48 hours will perform significantly more poorly than people who have been deprived of sleep for 24 hours. The table shown here indicate the data for the study.

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