1. An independent research group is interested to show that the percentage of babies delivered through Cesarian Section is decreasing. For the past years, 20% of the babies were delivered through Cesarian Section. The research group randomly inspects the medical records of 144 births and finds that 25 of the births were by Cesarian Section. Can the research group conclude that the percent of births by Cesarian Section has decreased at 5% level of significance? 2. In a test of Ho: u = 85 against Ha: H > 85, the sample data yield the sample statistic z = 1.64. Find the p-value for the test