Question

Suppose that your psychology professor, Dr. I.D. Ego, wants to evaluate people's driving ability after 24 hours of sleep deprivation. She develops a test of driving skill (scores ranging from 1=bad driving to 10 = excellent driving) and administers it to 101 drivers who have been paid to stay awake for 24 hours. The scores from the group had a mean of 4.5 and a standard deviation of 1.6. Determine if the sleep-deprived group mean is significantly different from the known population mean of 5.8 for the driving test. Assume alpha = 0.05.

conduct a t-test to answer the question.

Answer 1