Question: A study was designed to evaluate the weight-gain potential of a new poultry feed. A sample of 12 chickens was used in a six-week study.

A study was designed to evaluate the weight-gain potential of a new poultry feed. A sample of 12 chickens was used in a six-week study. The weight of each chicken was recorded before and after the six-week test period. The differences between the before and after weights of the 12 chickens are as follows: 1.5, 1.2, -.2, .0, .5, .7, .8, 1.0, .0, .6, .2, -.01. A positive difference indicates a weight gain and a negative difference indicates a weight loss.
Use a .05 level of significance to determine if the new feed provides a significant weight gain for the chickens.

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