A sample of 500 people was questioned regarding their satisfaction with their health insurance

A sample of 500 people was questioned regarding their satisfaction with their health insurance. Test if there is a difference in proportion with satisfaction and insurance at a 5% level of significance. The observed table is below:
Highly Satisfied Moderately Satisfied Dissatisfied Total
Private Insurance 138 83 64 285
Medicare 64 67 84 215
Total 202 150 148 500




A) What are the null and alternate hypotheses?
                                         
B) What is the critical values for this test?




C) What is the computed value of the test statistic?




D) What is the conclusion?


Chi-square table