4. Determine the probability density function for each of the following cumulative distribution functions. x<0 0.2x Osx<4 F(x) = 0.04x + 0.64 4sx<9 1 9sx
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- Verify that p(x) = 3x−4 is a probability density function on [1,∞) and calculate its mean value.If X is a continuous variable in the range 3 > X > 0 and its distribution function is as follows: F ( x ) = k : ( x3 + x2) find the probability density function?Verify that p(x) = 3x - 4 is a probability density function on [1, oo)and calculate its mean value.
- Which of the following tables shows a valid probability density function? Select all correct answers. Select all that apply: x P(X=x) 0 14 1 38 2 38 x P(X=x) 0 18 1 18 2 34 x P(X=x) 0 −310 1 110 2 15 3 1 x P(X=x) 0 0.74 1 0.0 2 0.54 x P(X=x) 0 110 1 15 2 35 x P(X=x) 0 0.18 1 0.76 2 0.0For the following probability density functions, compute P (μ - 2σ < X < μ+ 2σ). f (x) = (1/2)^X, x = 1, 2, 3, ..., zero elsewhere.Suppose that X and Y have a joint probability density function given by