Experience raising New Jersey Red chickens revealed the meanweight of the chickens at five months is 4.35 pounds. The weights follow the normal distribution. In an effort to increase their weight, a special additive is added to the chicken feed. The subsequent weights of a sample of five month old chickens were (in pounds):
At the .01 level has the special additive increased the mean weight on the chickens? Estimate the P-values.
The solution gives five step procedure for the testing of mean weight of New Jersey Red chickens. The P-value is also estimated.