Question:
Horatio wishes to test the hypothesis that there is a difference in the amount of sleep between older and younger people. Random samples of 30 year olds, 50 year olds and 70 year olds are selected for this research. Each subject is brought to a sleep lab and measured as to how many hours of sleep per night occurred.
Identify the DV and IV and conditions of the IV, if any. What type of data do you have? What statistical test should be used to analyze this data? Justify your answer.