The sex ratio of newborn human infants is about 105 males to 100 females. If four infants are chosen at random, what is the probability that (a) two are male and two are female? (b) all four are male? (c) all four are of the same sex?

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A:

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A: Solution is given:

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A: given data  n = 100P(favor candidate A )  = 0.7P(not favor candidate A ) = 1 - 0. 7 = 0.3x = no. of…

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Q: A poll is given, showing 25% are in favor of a new building project. If 10 people are chosen at…

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Q: A poll is given, showing 40% are in favor of a new building project. If 9 people are chosen at…

A:

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A: Given: Average number of errors per page is  λ=2

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Q: 4. At a High school, 70% of the seniors have taken an advance calculus course. Of those who have…

A: Let us denote:A=Advanced calculus courseB=Pre health science majorGiven that P(A)=70%=0.70,…