3. Two board members were chosen at random from 12 candidates of which 8 were independent candidates. a. Determine the probability distribution for the number of independent candidates selected. b. Find the mean and the variance of the distribution of the number of independent candidates chosen as board members.

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A:

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Q: The sum of E(-1)*1 . is equal to (1/2) 3 n=1 5" F TO

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Q: Answer unclear

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A: M23 is the matrix with 2 rows and 3 columns. That is a matrix of order 2×3.

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