Quiz : Quiz #5: Time Remalning: 00:58:53 Submit Quiz Distribution This Question:
ID: 3369762 • Letter: Q
Question
Quiz : Quiz #5: Time Remalning: 00:58:53 Submit Quiz Distribution This Question: 1 pt 5 of 11 (0 complete)This Quiz: 11 pts possi... Multiple-choice questions each have five possible answers (a, b, c, d, e), one of which is correct Assume that you guess the answers to three such questions. a. Use the multiplication rule to find P(CWW), where C denotes a correct answer and W denotes a wrong answer P(cww) (Type an exact answer.) b. Beginning with CWW, make a complete list of the different possible arrangements of one correct answer and two wrong answers, then find the probability for each entry in the list P(cww)-see above (Type exact answers.) c. Based on the preceding results, what is the probability of getting exactly one correct answer when three guesses are made? (Type an exact answer.) Enter your answer in each of the answer boxes.Explanation / Answer
P(C) = 0.2, P(W) = 0.8
a.
P(CWW) = 0.2*0.8*0.8 = 0.128
b.
P(WWC) = 0.8*0.8*0.2 = 0.128
P(WCW) = 0.8*0.2*0.8 = 0.128
c.
P(exactly one correct out of 3) = 0.128+0.128+0.128 = 0.384
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.