SOLUTION: A computer shop builds PC'S from shipments of parts it receives from various suppliers. The number of defective hard drives per shipment is to be modeled as a random variable X. Th

Question 840429: A computer shop builds PC'S from shipments of parts it receives from various suppliers. The number of defective hard drives per shipment is to be modeled as a random variable X. The random variable is assumed to have the following distribution:
X _________ P(x)
0 _________ 0.55
1 _________ 0.15
2 _________ 0.10
3 _________ 0.10
4 _________ 0.05
5 _________ 0.05
What is the probability that a shipment will have more than two defective hard drives?
Can you provide me an example that answers this similar question in steps that will help me practice?
Thank you,
Becky
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A computer shop builds PC'S from shipments of parts it receives from various suppliers. The number of defective hard drives per shipment is to be modeled as a random variable X. The random variable is assumed to have the following distribution:
X _________ P(x)
0 _________ 0.55
1 _________ 0.15
2 _________ 0.10
3 _________ 0.10
4 _________ 0.05
5 _________ 0.05
=========================
What is the probability that a shipment will have
more than two defective hard drives?
P(more than 2) = P(x=3)+P(x=4)+P(x=5) = 0.10+0.05+0.05 = 0.20
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Cheers,
Stan H.
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