The south beach diet was given to a volunteer group of 25 people who were atleast 25 pounds overweight. eighteen people from the group lost atleast 20 pounds. what should we conclude about the effectiveness?
(a) nothing, since the group knew they were using the diet
(b) the diet is effective in 72% of people
(c) nothing, since the 25 people were not an srs
(d) nothing, since there was no control group
(e) people overweight by atleast 50 pounds will lose more than 20 pounds on the diet

The table below represents the displacement of a fish from its reef as a function of time: time (hours) x displacement from reef (feet) y 0 4 1 64 2 124 3 184 4 244 part a: what is the y-intercept of the function, and what does this tell you about the fish? (4 points) part b: calculate the average rate of change of the function represented by the table between x = 1 to x = 3 hours, and tell what the average rate represents. (4 points) part c: what would be the domain of the function if the fish continued to swim at this rate until it traveled 724 feet from the reef? (2 points)