An accounting professor is notorious for being stingy in giving out good letter grades. In a large section of 105 students in the fall semester, she gave out only 4% A's, 20% B's, 40% C's, and 36% D's and F's. Assuming that this was a representative class, compute the 90% confidence interval of the probability of getting at least a B from this professor. (You may find it useful to reference the z table. Round intermediate calculations to at least 4 decimal places. Round "z" value and final answers to 3 decimal places.) Confidence interval to

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An accounting professor is notorious for being stingy in giving out good letter grades. In a large section of 105
students in the fall semester, she gave out only 4% A's, 20% B's, 40% C's, and 36% D's and F's. Assuming that this
was a representative class, compute the 90% confidence interval of the probability of getting at least a B from this
professor. (You may find it useful to reference the z table. Round intermediate calculations to at least 4 decimal
places. Round "z" value and final answers to 3 decimal places.)
Confidence interval
to
Transcribed Image Text:An accounting professor is notorious for being stingy in giving out good letter grades. In a large section of 105 students in the fall semester, she gave out only 4% A's, 20% B's, 40% C's, and 36% D's and F's. Assuming that this was a representative class, compute the 90% confidence interval of the probability of getting at least a B from this professor. (You may find it useful to reference the z table. Round intermediate calculations to at least 4 decimal places. Round "z" value and final answers to 3 decimal places.) Confidence interval to
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