Question

An accounting professor is notorious for being stingy in giving out good letter grades. In a large section of 130 students in the fall semester, she gave out only 5% A's, 28% B's, 38% C's, and 29% D's and F's. Assuming that this was a representative class, compute the 95% confidence interval of the probability of getting at least a B from this professor.

Name: an accounting professor is notorious for being stingy in giving out good letter grades in a large section of 130 students in the fall semester she gave out only 5 as 28 bs 38 cs and 29 ds an 75918
Uploaded: 2023-02-26T17:56:22-08:00
Duration: 2 min 40 s
Channel: Sri K
Description: an accounting professor is notorious for being stingy in giving out good letter grades in a large section of 130 students in the fall semester she gave out only 5 as 28 bs 38 cs and 29 ds an 75918

          An accounting professor is notorious for being stingy in giving out good letter grades. In a large section of 130 students in the fall semester, she gave out only 5% A's, 28% B's, 38% C's, and 29% D's and F's. Assuming that this was a representative class, compute the 95% confidence interval of the probability of getting at least a B from this professor.

Added by Jennifer W.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Sri K

02/26/2023

Step 1

- "At least a B" means A or B. - p_hat = P(A or B) = 5% + 28% = 33% = 0.33. Show more…

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An accounting professor is notorious for being stingy in giving out good letter grades. In a large section of 130 students in the fall semester, she gave out only 5% A's, 28% B's, 38% C's, and 29% D's and F's. Assuming that this was a representative class, compute the 95% confidence interval of the probability of getting at least a B from this professor.