The mean mass of the puppies at five months is 4.34 kg. Themasses follow the normal distribution. In an effort to increasetheir mass, a supplement is added to their daily meals. Thesubsequent masses of a sample of five-month-old puppies were (inkilograms):
| 4.42 | 4.37 | 4.24 | 4.20 | 4.60 | 4.35 | 4.56 | 4.33 | 4.46 | 4.36 |
a. At the 0.01 level, has the supplementincreased the mean mass of the puppies? (Round the finalanswer to 3 decimal places. Negative answers should be indicated bya minus sign.)
Value of the test statistic
Reject H0 if t>Ă‚Â Ă‚Â .
(Click to select)  Reject  Do notreject  H0. Thereis  (Click to select)  not enough / enoughevidence to conclude that the additive increased the mean weight ofpuppies.
b. Determine or estimate the p-value.(Round the final answer to 4 decimal places.)
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