(b) (4 points) Regardless of the answer you found in part (a), build a 78% (not 95%!) confidence interval based on a sample of size n = 500 with a sample proportion P = 0.064 (6.4%). (c) (1 point) If you instead built a 95% confidence interval from the same data, would it be narrower or wider than a 78% confidence interval? Why