SOLUTION: q-1 The average percentage of failure of in a exam is 40 .What is the probability that out of a group of 6 candidates at least 4 passed in the exam q-2 X registered contractor

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Question 343885: q-1 The average percentage of failure of in a exam is 40 .What is the probability that out of a group of 6 candidates at least 4 passed in the exam
q-2 X registered contractor with the govt .Recently x has submitted his tender for two contracts a&b THE PROBABILITY OF GETTING THE CONTRACT A is 1/2 the contract A&B IS 1/8 .Find the probability that x get contract a&b
Answer by stanbon(75887) (Show Source):
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q-1
The average percentage of failure of in a exam is 40 .
Percentage of success is 60.
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What is the probability that out of a group of 6 candidates at least 4 passed in the exam
P(4<= x <=6) = 1 - binomcdf(6,0.6,3) = 1 - 0.4557 = 0.5443
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q-2 X registered contractor with the govt .
Recently x has submitted his tender for two contracts a&b THE PROBABILITY OF GETTING THE CONTRACT A is 1/2 the contract A&B IS 1/8 .Find the probability that x get contract a&b
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Please use the words "AND" and "OR" instead of the symbol "&".
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Cheers,
Stan H.