Question 9 9 pts A study is done to estimate the proportion of residents of Los Angeles that have used the Metro at some point. The 95% confidence interval for the proportion is found to be (0.35, 0.49). Based on this answer the following questions. 1. What was the point estimate of the population proportion? (The sample proportion) [ Select ] 2. What was the calculated margin of error in the confidence interval? [ Select ] 3. If a sample of 2203 residents was used in the study, how many of them said that they had ridden the Metro at some point? [ Select ]