A group of individuals were surveyed about their favorite TV network. The table
ID: 3323632 • Letter: A
Question
A group of individuals were surveyed about their favorite TV network. The table below shows the result.
ABC
NBC
CBS
TBS
Total
Male(M)
250
280
220
180
930
Female(F)
310
300
280
250
1140
Total
560
580
500
430
2070
One person is selected randomly from the participants. What is the probability that the selected person is male given that the person preferred to watch ABC. Write your answer in percent with 2 decimal places.
ABC
NBC
CBS
TBS
Total
Male(M)
250
280
220
180
930
Female(F)
310
300
280
250
1140
Total
560
580
500
430
2070
Explanation / Answer
P(Male | Prefer to watch ABC)
= P(Male and Prefer to watch ABC) / P(Prefer to watch ABC)
= 250 / (250 + 310)
= 250 / 560
= 25 / 56
= 0.45
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