Question

a. all Hypothesis Tests must include all four steps, clearly labeled;

b. all Confidence Intervals must include all output as well as the CI itself

c. include which calculator function you used for each problem.

2. Does cohabitation prior to marriage change the probability of the marriage’s success? A recent random sample compares the divorce rate for couples who cohabitated prior to marriage versus those couples that had not cohabitated prior to marriage: It was found that 110 of 500 couples that cohabitated prior to marriage ended in divorce, whereas 133 of 500 that did not cohabitate prior to marriage resulted in divorce.

a. Build a 98% confidence interval for the difference in divorce rates for cohabitating versus non-cohabitating couples

prior to marriage.

b. Based on your interval, draw an appropriate conclusion.

Answer 1