Section 7.1: Estimating a Population Proportion Stat 50 Intro DESCRIPTIVE PROBABILITY INFERENTIAL STATISTICS STATISTICS Find a level of RELIABILITY Look at the tray of beans that was brought to class today. We are going to try and estimate the percentage of black beans in the tray. What percentage of the tray's contents do you feel are black beans? Write your guess below. a. How could we find out if we are right? b. Based on our sample, the instructor's best guess is that there is between % and % of black beans in the tray. That's a proportion of between and What level of agreement do you have with this guess? (Circle one) Totally agree Somewhat agree Somewhat disagree No Way