SOLUTION: A building contractor buys 90% of his cement from supplier A and 10% from supplier B. A total of 70% of the bags from A arrive undamaged, and a total of 75% of the b
Algebra ->
Probability-and-statistics
-> SOLUTION: A building contractor buys 90% of his cement from supplier A and 10% from supplier B. A total of 70% of the bags from A arrive undamaged, and a total of 75% of the b
Log On
Question 1136516: A building contractor buys 90% of his cement from supplier A and 10% from supplier B. A total of 70% of the bags from A arrive undamaged, and a total of 75% of the bags from B arrive undamaged.
Find the probability that a damaged bag is from supplier Upper B. Found 2 solutions by Boreal, ikleyn:Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! Use 1000 bags
900 come from A and 630 are undamaged and 270 are damaged
100 come from B and 75 are undamaged and 25 are damaged.
If a randomly chosen bag is damaged, there is a 25/295 chance it came from B or 0.0847 probability.
P = = 0.0847 = 8.47%. ANSWER
My formula is SELF-EXPLANATORY.
If you have questions about it - look in it attentively, and it will tell you everything about itself.
