Question
C Please Answer Th 20 C Essentials or c secure l https//wwwmatholcom/student/playerTest.aspxttestld 159732210 Apps For quick access your the bookmarks bar. Import bookmarks now. Statistics (section 05) (3 cr)(MML+)-Ken Sharp Quiz: Chapter 5 Quiz This Question: 2 pts 2 of 15 (6 Domplele Multiple choice questions each have four possible answers (a, b, c, d. one ofwhich is corect. Assume tha you guess the answers to three such questions. use the multiplication nule to snd Pycwch, where cdenetes a tomect answer and w denotes a wrong answer (ype an exact answer b Beginning with CWC make a complete list of the different possible amangomerts of two correct answers and one wrong answer then find the probablky for each enory in the list Prowc)- see above (Type exact anowers c. Based on the preceding results what is the probability of getting ctly two comect answers when three guesses are made? er your answer in each of the answer boxes
Explanation / Answer
Probability of correct answer, P(C) = 1/4
So, P(W) = 1 -1/4 = 3/4
A) P(CWC) = 1/4 x 3/4 x 1/4 = 3/64
B) P(CWC) = 3/64
P(WCC) = 3/4 x 1/4 x 1/4 = 3/64
P(CCW) = 1/4 x 1/4 x 3/4 = 3/64
C) P(2 correct answers when 3 guesses are made) = (3/64) + (3/64) + (3/64)
= 9/64
