lescrete random variable? Houw is a CDF defined? Solve the following roblem. A eitizen in searech of work sent to three different organizations. Pro- ability of getting an invitation to the interview from the first company quals 0.4, from the second one - 0.6, from the third one 0.7. Find he mean value, variance, mean square deviation, mode and median of he number of companies, given the positive answer.

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