Question 466071: Of the coffee makers sold in a appliance store, 3.0% have either a faulty switch or a defective cord, 2.4% have a faulty switch, and 0.3% have both defects. What percent of the coffee makers will have a defective cord?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Of the coffee makers sold in a appliance store, 3.0% have either a faulty switch or a defective cord, 2.4% have a faulty switch, and 0.3% have both defects. What percent of the coffee makers will have a defective cord?
---
P(a or b) = P(a)+P(b)-P(a and b)
----
0.03 = P(dc) + 0.024 - 0.003
---
P(dc) = 0.03-0.024+0.003
---
P(dc) = 0.006 + 0.003
---
P(defective cord) = 0.009 or 0.9%
=======================================
Cheers,
Stan H.
=======================================
|
|
|
