SOLUTION: In a shipment of 50 transformers, 7 are known to be defective. If 30 transformers are picked at random, what is the probability that all 30 are nondefective? Assume that all transf

Question 216366: In a shipment of 50 transformers, 7 are known to be defective. If 30 transformers are picked at random, what is the probability that all 30 are nondefective? Assume that all transformers look alike and have an equal probability of being chosen. round to 6 decimals
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
In a shipment of 50 transformers, 7 are known to be defective. If 30 transformers are picked at random, what is the probability that all 30 are nondefective? Assume that all transformers look alike and have an equal probability of being chosen. round to 6 decimals
--------------------------------------------------------
# defective = 7
# not defective = 43
-------------------------------
P(30 non defective) = 43C30/50C30 = 0.0007761
===============================================
Cheers,
Stan H.
RELATED QUESTIONS
In a shipment of 50 transformers, 10 are known to be defective. If 30 transformers are... (answered by Edwin McCravy)

I found this problem on the agebra.com website. I have a few problems like this but... (answered by sudhanshu_kmr)

In a shipment of 50 calculators, 5 are known to be defective. If 6 calculators are picked (answered by ewatrrr)

A 12% discount will be given on a $2,500.00 order of transformers if paid within 30 days. (answered by ewatrrr,rfer)

A 12% discount will be given on a $2,500.00 order of transformers if paid within 30 days. (answered by ewatrrr)

A rectangular concrete base 6 feet wide and 10 feet long supports a transformers whose... (answered by Alan3354)

1.In a shipment of 50 DVD players, 2 are defective. If 30 players are picked at random,... (answered by stanbon)

In a shipment of 190 items, 3 are found defective. If 3 items are selected at random,... (answered by Boreal)

There are 1000 components in a box of which 10 are known to be defective. two... (answered by Edwin McCravy)