Assume that in Exercise 5 the new diet costs more than the old one. The cost is approximately equal to the value of 25 lb. of additional weight. Does this affect the results obtained in Exercise 5?...

Assume that in Exercise 5 the new diet costs more than the old one. The cost is approximately equal to the value of 25 lb. of additional weight. Does this affect the results obtained in Exercise 5? Redo the problem if necessary.

Exercise 5

To assess the effectiveness of a new diet formulation, a sample of 8 steers is fed a regular diet and another sample of 10 steers is fed a new diet. The weights of the steers at 1 year are given in Table 5.15. Do these results imply that the new diet results in higher weights? (Use α = 0:05.)