8. Animal behaviorists have discovered that the more domestic chickens peck at objects placed in their...
8. Animal behaviorists have discovered that the more domestic chickens peck at objects placed in their environment, the healthier the chickens seem to be. In one experiment, 72 chick- 1S. The number of pecks each was recorded over an interval of time. Summary statistics showed that the mean X 1.13 pecks, and the standard deviation s 2.21 pecks. Determine the 99% confidence interval on the mean.