11.7 The accompanying data on food intake (in Kcal)

for 15 men on the day following two nights of only 4 hours of sleep each night and for 15 men on the day following two nights of 8 hours of sleep each night is consistent with summary quantities in the paper

“Short-Term Sleep Loss Decreases Physical Activity under Free-Living Conditions But Does Not Increase Food Intake under Time Deprived Laboratory Conditions in Healthy Men” (American Journal of Clinical Nutrition [2009]: 1476–

1482). The men participating in this experiment were randomly assigned to one of the two sleep conditions.

4-hour sleep group: 3585 4470 3068 5338 2221 4791 4435 3099 3187 3901 3868 3869 4878 3632 4518 8-hour sleep group: 4965 3918 1987 4993 5220 3653 3510 3338 4100 5792 4547 3319 3336 4304 4057 If appropriate, carry out a two-sample t test with a 5 .05 to determine if there is a significant difference in mean food intake for the two different sleep conditions.