1.The trustee of a company's pension plan has solicited the opinions of a sample of the company's employees regarding a proposed revision of the plan. A breakdown of the responses is shown in the table below: -

Response

Lower level management

Middle management

Topmanagement

For

Against

67

63

32

18

11

9

Is there sufficient evidence at the 5% significance level, to conclude that the responses differ among the three groups of employees?