Question

The mean mass of the puppies at five months is 4.39 kg. The masses follow the normal distribution. In an effort to increase their mass, a supplement is added to their daily meals. The subsequent masses of a sample of five-month-old puppies were (in kilograms):

4.48 4.60 4.49 4.54 4.54 4.55 4.50 4.39 4.30 4.20

a. At the 0.01 level, has the supplement increased the mean mass of the puppies? (Round the final answer to 3 decimal places. Negative answers should be indicated by a minus sign.)

Value of the test statistic ______

Reject H0 if t > ______

{Reject, Do Not Reject) H0.There is (enough, not enough) evidence to conclude that the additive increased the mean weight of puppies.

b. Determine or estimate the p-value. (Round the final answer to 4 decimal places.)

_____

Answer 1