According to the Pew report, 14.6% of newly married couples in 2008 reported that their spouse was of another race or ethnicity (CNNLiving, June 7, 2010). In a similar survey in 1980, only 6.8% of newlywed couples reported marrying outside their race or ethnicity. Suppose both of these surveys were conducted on 120 newly married couples.
a. Specify the competing hypotheses to test the claim that there is an increase in the proportion of people who marry outside their race or ethnicity.
b. Calculate the value of the test statistic and the p-value.
c. At the 5% level of significance, what is the conclusion to the test?