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3-According to a survey, 40% of adults are against using animals for research. Assume that this result holds true for the current population of all adults. Suppose 2 adults are selected random. Let X be the number of adults who are against using animals for research. a- Draw a tree diagram for this problem b- Write probability distribution of X. c- Find E(X) and Var(X).

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ch 스ㅡ 0.40 ㅡ 0.60 > p (rr) : 096 0(o . 36) t ((0.48) t 2(0.16 : So, vx) 1.12-Co 0)

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