Question

(1 point) A multiple-choice test consists of 22 questions with possible answers of a, b, c, d. Estimate the probability that with random guessing, the number of correct answers is at least 12.

The answer above is NOT correct. (1 point) A multiple-choice test consists of 22 questions with possible answers of a, b, c, d. Estimate the probability that with random guessing, the number of correct answers is at least 12. 0.0029

Answer 1

saluban: Here we 2 have to lind p(x212) using continuity correctan P(x > 12) = P(x > 15) Plz> 11:5-u from the given data we have and Pallu 20.25 =) q=1-821-0.25=0.75 unp 22 (0.25):5.5 - npą EJ 22(0.25) 10.75) = 2.03) P ( 2 12) = plz > ll.5-6.5 n=22 2.031 p(2> 2.9542) 0.0015674 ♡ 0.0016