A crayon manufacturer is comparing the effects of two kinds of yellow dye on the brittleness of crayons. Dye B is more expensive than dye A, but it is thought that it might produce a stronger crayon. Four crayons are tested with each kind of dye, and the impact strength (in joules) is measured for each. The results are as follows:
a. Can you conclude that the mean strength of crayons made with dye B is greater than that of crayons made with dye A?
b. Can you conclude that the mean strength of crayons made with dye B exceeds that of crayons made with dye A by more than 1 J?
09/0609/09 In Dynamic muscular contractions we will use Concentric Action and/or Eccentric Action. Concentric action is the shortening of a muscle and going against gravity while Eccentric action is the lengthening of a muscle and going with gravity. In both actions the muscle(s) will be under load. An example of this would be doing a bicep curl. When you lift the dumbbell you are...