1.A research study was done to determine if the red foxes in Habitat A were larger than the red foxes in Habitat B. The weights, in pounds, of 20 adult red foxes in each habitat was taken. The data are shown below. At = 0.05, what are the results? (Data re continued on next page.)

Habitat A

182017151618161926212017

1930181915201515

Habitat B

172215161417151017171310

1116121715161315

H_a: The average weights of red foxes in Habitat A are larger than the average weights of red foxes in Habitat B.

2.A sample of 8 students from the Kinesiology Department were chosen to participate in a training program that was reported to help in improving their discus throwing performance. The distance (in meters) of the thrown discus for each student was recorded before the training program and after the training program.The data are provided below. At = .05, can it be concluded that there is an improvement in distance?

Before67.0861.8864.7459.2658.6761.2263.4862.69

After67.5562.5461.3963.1459.9164.4257.1061.69

H_a: There is an improvement in discus throwing distance after the training program.

3.A washing machine manufacturer wants to improve the quality of their products by reducing the defects in production. Two assembly lines were monitored for efficiency. For Assembly Line 1, there were 10 defects noted out of a sample of 150 washing machines. For Assembly Line 2, there were 12 defects noted out of a sample of 150. At = .05, is there a difference in efficiency between the 2 assembly lines?

H_a: There is a difference in the efficiency of Assembly Line 1 and Assembly Line 2.