Math
posted by Anna
At a quality control checkpoint on a manufacturing assembly line, 8% of the items failed check A, 10% failed check B, and 2% failed both checks A and B.
a. If a product failed check A, what is the probability that it also failed check B? b. If a product failed check B, what is the probability that it also failed check A?
c. What is the probability that a product failed either check A or check B?
d. What is the probability that a product failed neither check A nor check B?
I am not good with probability and the percentages are really throwing me off. Any help would be great.

drwls
a)1/4 (25%) of those that failed A also failed B. That leaves you with 1/4 or 8% or 2% failing both.
b) Similarly, 1/5 (20%) of those that failed B also failed A.
c) Add the fractions that failed A only, B only, and both. I get 8% + 6% + 2% = 16%
That fraction failed A only, B only or both.
d) 84%
Respond to this Question
Similar Questions

Math
At a quality control checkpoint on a manufacturing assembly line, 8% of the items failed check A, 10% failed check B, and 2% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check … 
Math
At a quality control checkpoint on a manufacturing assembly line, 8% of the items failed check A, 10% failed check B, and 2% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check … 
math
At a quality control checkpoint on a manufacturing assembly line, 8% of the items failed check A, 10% failed check B, and 2% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check … 
Math
At a quality control checkpoint on a manafacturing assembly line, 10% of the items failed check A, 12% failed check B, and 3% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check … 
Math
At a quality control checkpoint on a manafacturing assembly line, 10% of the items failed check A, 12% failed check B, and 3% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check … 
Math
Can someone please help me. At a quality control checkpoint on a manafacturing assembly line, 10% of the items failed check A, 12% failed check B, and 3% failed both checks A and B. a. If a product failed check A, what is the probability … 
Math 157
Can someone please help me. At a quality control checkpoint on a manafacturing assembly line, 10% of the items failed check A, 12% failed check B, and 3% failed both checks A and B. a. If a product failed check A, what is the probability … 
Math quick check thx
Out of 42 kids in a class twice as many failed Ela as math,4 failed both. If 7 failed neither, find how many failed each subject. I made a venn diagram the middle part of the venn diagram would be 7 and the math part would be 13 and … 
math
A market research survey conducted by CompanyCheck was looking at the reason why small businesses fail. From a group of 84 businesses that failed they discovered the following: 41 failed because of a lack of funds; 36 failed because … 
math
A market research survey conducted by CompanyCheck was looking at the reason why small businesses fail. From a group of 84 businesses that failed they discovered the following: 41 failed because of a lack of funds; 36 failed because …