Question

1. To determine the effectiveness of a feed supplement for cattle, High-Grade Feeds conducts a pilot study. Eight steers are randomly divided into a group of 4 steers to be fed the supplement (supplement group), and another group (control group) of 4 steers to be fed exactly the same diet except for the supplement. The weight gains (lbs.) over a period of 6 months were as follows:

Supplement Group	Control Group
330	290
360	320
400	340
350	370

1. Test the effectiveness of the supplement. Assume 5% level of significance.

Repeat Q.2 but assume the two groups have the same steers. In other words, the 4 steers are fed with and without supplement.

2. Test the effectiveness of the supplement with 5% level of significance.
3. Compare the results of Q.2 and Q.3(a), what can you conclude about the two experiments?

Answer 1