SOLUTION: From a large shipment of transistors from a supplier, 1% of the items are known to be defective. If a sample of 200 transistors are selected at random, what is the probability that

Question 663125: From a large shipment of transistors from a supplier, 1% of the items are known to be defective. If a sample of 200 transistors are selected at random, what is the probability that 4 or more transistors will be defective?
The method I tried:
X-B(200,0.01), find P(X>=4)
n=200 np=200(0.01)=2<5
Therefore X-P(2)
P(X>=4)=1-P(X=3)
Then ???
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
From a large shipment of transistors from a supplier, 1% of the items are known to be defective. If a sample of 200 transistors are selected at random, what is the probability that 4 or more transistors will be defective?
----
Binomial Problem with n = 200 ; p(defect) = 0.01
----
P(x>=4) = 1 - P(0<= x <=3) = 1 - binomcdf(200,0.01,3) = 0.1420
====================
Cheers,
Stan H.
RELATED QUESTIONS
From a shipment of 60 transistors, 4 of which are defective, a sample of 4 transistors is (answered by edjones)

#10 From a shipment of 65 transistors, 3 of which are defective, a sample of 4... (answered by ikleyn)

I am having trouble about applying my knowldege of permutations and combinations Here (answered by stanbon)

----------- A simple random sample of 300 is selected from a large shipment and testing... (answered by robertb)

A simple random sample of 300 is selected from a large shipment and testing reveals that... (answered by Boreal)

A carton contains 15 transistors of which 5 are defective. If a random sample of 6... (answered by greenestamps,ikleyn)

suppose that a machine shop orders 400 bolts from a supplier. to determine whether to... (answered by Fombitz)

A company buys 20% of its electronic chips from supplier New and the rests from other... (answered by CPhill)

A local company has a policy that it will reject a shipment of parts from its supplier... (answered by stanbon)