A public hospital received training application letters from 12 medicine degree and pharmacy degree graduates. 7 out of these graduates are medicine degree graduates. Four of these graduates are to be chosen at random. The random variable X represents the number of pharmacy degree graduates chosen. Construct the probability distribution of X. Calculate the expected mean for X, E(X). Calculate the expected variance for X, Var(X).

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A public hospital received training application letters from 12 medicine
degree and pharmacy degree graduates. 7 out of these graduates are medicine
degree graduates. Four of these graduates are to be chosen at random. The
random variable X represents the number of pharmacy degree graduates
chosen.
Construct the probability distribution of X.
Calculate the expected mean for X, E(X).
Calculate the expected variance for X, Var(X).
Transcribed Image Text:A public hospital received training application letters from 12 medicine degree and pharmacy degree graduates. 7 out of these graduates are medicine degree graduates. Four of these graduates are to be chosen at random. The random variable X represents the number of pharmacy degree graduates chosen. Construct the probability distribution of X. Calculate the expected mean for X, E(X). Calculate the expected variance for X, Var(X).
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