Most engaged couples expect or at least hope they will have high levels of marital longevity. However, because 54% of first marriages end in divorce, social scientists have begun investigating influences on marital longevity. (Data source: These data were obtained from the National Center for Health Statistics.) Suppose a social psychologist sets out to study the role of sexual orientation in relationship longevity. He measures relationship longevity in a random sample of homosexual couples and in a random sample of heterosexual couples and compares the data. Assume that relationship longevity is normally distributed and that the variance in longevity is approximately the same among homosexual couples as among heterosexual couples. Step 1: Do the data meet the test requirements? A. Is there independent random sampling? No Yes