One hundred fifty government workers chosen at random were asked to express their attitude toward the proposition "compulsory retirement age for government workers should be 60 years". The responses are as follows: Variable Favorable Indifferent Unfavorable Total Observed 73 30 47 150 f Questions: 1. Do the subject-cases indicate a significant trend of opinion? 2. Formulate your null-hypothesis and set the level of significance at 0.05 3. Use appropriate statistical tool to answer question no. 1 and to test your null-hypothesis 4. Present your data in tabular form and discuss such briefly