While walking by the park one afternoon, you notice that there are 11 people on the...
While walking by the park one afternoon, you notice that there are 11 people on the playground: 3 of them are adult males, 4 of them are adult females, 3 of them are male children, and 1 of them is a female child. Two of these individuals are randomly selected and X is defined to be the number of children while Y is the number of females.
a) The covariance of X and Y is σXY?
b) The expected number of females selected given that one child is selected is E[Y|1]?
c) The conditional variance of Y given X=1 is σ2Y|1?
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is found
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is found
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