An accounting professor is notorious for being stingy in giving out good letter grades In a large section of 40 students in the fall semester, she gave out only 5% A's, 12% B's, 34% C's, and 49% D's and F's. Assuming that this was a representative class, compute the 99% confidence interval of the probability of getting at least a B from this professor. (You may find it useful to reference the z teble. Round intermediate calculations to at least 4 decimal places. Round " value and final answers to 3 decimal places.) Confidence interval to