A New Fiber Bar Is Advertised to Curb Hunger for Three

Multiple Choice

A new fiber bar is advertised to curb hunger for three hours. A sample of thirty- six hungry subjects were asked to record their level of hunger before eating the fiber bar and again three hours after eating the fiber bar. Which test should be used to test the hypothesis there is no difference in the level of hunger three hours after eating the fiber bar (i.e. the fiber bar curbed hunger for three hours) ?

A) Mann- Whitney Test
B) Data transformation
C) Paired t- test
D) Sign Test