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deepunalli300p3ur3i
05.05.2020 •
Mathematics
Solve for x ? Help me please
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Ответ:
Ответ:
0.4138 or 41.38%
Step-by-step explanation:
Prob(a) = 0.15
Prob(b|a) = 0.80
A = event that taxi is blue
B = witness says it is blue
Prob(taxi is not blue) = 1 - prob(a)
= 1- 0.15
= 0.85
Prob(b|a') = 1 - prob(b|a)
= 1 - 0.8
= 0.20
Using addition rule
P(b) = p(a)p(b|a) + p(a')p(b|a')
= 0.15 * 0.8 + 0.85 * 0.20
= 0.29
Now we are to find probability that the taxi that is at fault is blue
According to bayes theorem
P(a|b) = P(a)*p(b|a) / p(b)
= 0.15 x 0.8 / 0.29
= 0.4138