Through randomization, 30 drug dependents were placed for 5 months under three different types of rehabilitation methods. Before the rehabilitation, the weight of each dependent was measured, recorded and led. After three months of rehabilitation the weight of each dependent was measured. recorded and compared to determine what group has the highest average weight gained. The data are as follows: Rehabilitation Rehabilitation Rehabilitation Method A Method B Method C Gained Weight in lbs. 6 4 3 4 3 3 3 5 4 5 3 2 8 4 3 8 5 4 7 4 2 6 3 4 5 3 3 Y 5 3 Questions: 5. .Are there signicant differences between and among the weights gained by the three groups of drug dependents under rehabilitation methods AB and C? 6. Formulate your null-hypothesis and set the level of signicance at 0.05 7. Use appropriate statistical tool to answer question no. 1 and to test your null-hypothesis 8. Present your data in tabular form and discuss such briey 9. If the null-hypothesis is rejected, perform further statistical analysis using appropriate statistical tool to determine the pairfs that have signicant difference