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Confidence interval of the probability of getting

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An accounting professor is notorious for being stingy in giving out good letter grades. In a large section of 140 students in the fall semester, she gave out only 5% As, 23% Bs, 42% Cs, and 30% Ds and Fs. Assuming that this was a representative class, compute the 95% confidence interval of the probability of getting at least a B from this professor.

Reference no: EM131319988

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