Adults and high school students were asked four trivia questions. The number of correct answers given by each participant was recorded. To the right is a table showing the results. Complete parts a) through e).
,0,1,2,3,4,Total
Adults,16,32,36,45,31,160
Students,45,15,7,40,40,147
Total,61,47,43,85,71,307
a. If we select a participant at random, what's the probability we choose an adult who had one correct answer? b) Among the participants who had one correct answer, what is the probability the person is an adult? |
|
c) |
What is the probability that an adult participant had one correct answer? |
d. What is the probability that a student participant had no correct answers?
e. What is the probability that a participant with no correct answers is a student?
(Round to three decimal places as needed.)
0 | 1 | 2 | 3 | 4 | total | |
adult | 16 | 32 | 36 | 45 | 31 | 160 |
student | 45 | 15 | 7 | 40 | 40 | 147 |
total | 61 | 47 | 43 | 85 | 71 | 307 |
a)
probability we choose an adult who had one correct answer =32/307
b)
P(Adult |one correct answer)=32/47
c)
probability that an adult participant had one correct answer =32/160 =1/5
d)
probability that a student participant had no correct answers=45/147 =15/49
e)
probability that a participant with no correct answers is a student =45/61
Adults and high school students were asked four trivia questions. The number of correct answers given...
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