Show transcribed image text (6) A student takes a multiple-choice test consisting of two problems. The first problem has 3 possible answers and the second one has 5. The student picks, at random, one answer as the correct answer for each of the two problems. Find: (a) the expected number, E(X), of the right answers (X ) provided by the student; (b) the Var(X).
(6) A student takes a multiple-choice test consisting of two problems. The first problem has 3 possible answers and the second one has 5. The student picks, at random, one answer as the correct answer for each of the two problems. Find: (a) the expected number, E(X), of the right answers (X ) provided by the student; (b) the Var(X).
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