1. In 2011, 70% of Vietnam's population lived in rural areas (Source: World Bank estimates based on United Nations Population Division's World Urbanization Prospects). You belong to a team of researchers that wants to know if the proportion of Vietnamese residents residing in rural areas is lower today, in 2021, than it was in 2011. You randomly sample 1,000 Vietnamese residents and find that 63% report living in rural areas. State your null hypothesis and alternative hypothesis. Using the 95% confidence level, calculate your confidence interval for the proportion of Vietnamese residents who live in rural areas in 2021. Can you reject your null hypothesis? ~ 2. +