SOLUTION: it is estimated that 30% of all drivers have some kind of medical aid in USA. What is the probability that in a sample of 10 drivers: 1. Exactly 4 will have a medical aid. 2.

Question 1115521: it is estimated that 30% of all drivers have some kind of medical aid in USA. What is the probability that in a sample of 10 drivers:
1. Exactly 4 will have a medical aid.
2. Atleast 2 will have a medical aid.
3. More than 9 will have a medical
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
it is estimated that 30% of all drivers have some kind of medical aid in USA. What is the probability that in a sample of 10 drivers:
Binomial Problem with n = 10 and p = 0.3
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1. Exactly 4 will have a medical aid:: binompdf(10,0.3,4)
2. At least 2 will have a medical aid:: 1 - binomcdf(10,0.3,1)
3. More than 9 will have a medical:: 1- binomcdf(10,0.3,9)
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I use a TI-84+ to get the decimal answers.
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Cheers,
Stan H.
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