The opinions of all 500 students at a high school on whether they support Candidate A for student body president are shown below. Hide and shuffle all of the values. Take a random sample of 40 values from the population. Based on that sample, find the sample proportion and use that value to create a 95% confidence interval for the true proportion of the population who support Candidate A, rounding to the nearest thousandth.
Sample Yes: 31 Sample No: 9 Samples: 40