Three groups of senior citizens with the different education levels are surveyed to find whether or not they're confused by new medicare drug benefit plan. Using following data, test the hypothesis that there is no significant defference in proportion of seniors confused among the three groups regardless of education level.
Employ 5 % significance level.
|
Education Level
|
College +
|
High School
|
Less than High School
|
Total
|
|
Number Confused
|
60
|
120
|
160
|
340
|
|
Number Not Confused
|
90
|
130
|
40
|
260
|
|
Total
|
150
|
250
|
200
|
600
|