For the following situations, write out a research hypothesis:

a. Bob wants to know if the weight loss for his group on the chocolate-

only diet is representative of weight loss in a large population of middle-aged men who are on a chocolate-only diet.

b. The health departme~t is charged with finding out whether the rate of flu per thousand citi zens for this past flu season is comparable to the rate of the last 50 seasons.

c. Blair is the landlord of several apartment buildings. He is almost sure that his monthly costs over the last year for his current group of apartments are not representative of his monthly costs over the past 20 years.