4.22 The random variable x has the discrete probability distribu- tion shown here: -2 1 2 -1 .15 p(x) .10 .40 .30 .05 a. Find P(x < 0). b. Find P(x > -1). c. Find P(-1 < x < 1). d. Find P(x < 2). e. Find P(-1 < x < 2). Find R(u

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