A researcher wants to perform a hypothesis test to determine whether the mean length of marriages in California differs from the mean length of marriages in Texas. O Let u, denote the mean length of marriages in California and let u, denote the mean length of marriages in Texas. The null and alternative hypotheses are Ho: H1 = H2 Ha: H1 > H2 O Let 1 denote the mean length of marriages in California and let T2 denote the mean length of marriages in Texas. The null and alternative hypotheses are Ho: $1 = $2 Ha: [1 * X2 O Let u, denote the mean length of marriages in California and let u, denote the mean length of marriages in Texas. The null and alternative hypotheses are Ho: H1 = H2 Ha: M1 * H2 O Let u, denote the mean length of marriages in California and let u, denote the mean length of marriages in Texas. The null and alternative hypotheses are