Suppose f (x) = 0.125x for 0 < x < 4. determine the mean and variance of X. Round your answers to 3 decimal places. E (X) Your solution’s ready to go! Our expert help has broken down your problem into an easy-to-learn solution you can count on.

To find the mean of x, we need to calculate the expected value. We can do this by multiplying each value of x by its corresponding probability and then summing up the results. In this case, using the given values and probabilities, we have 0(0.20) + 1(0.45) + 2(0.20) + 3(0.10) + 4(0.05) = 1.35. Therefore, the mean of x is 1.35.

0.125 x = 0.025 (5 x + 1) To eliminate decimal points, multiply by 10 for every digit after the decimal point There are 3 digits to the right of the decimal point, therefore multiply by 1000 0.125 x ⋅ 1000 = 0.025 ( 5 x + 1 ) ⋅ 1000

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2014年9月22日 · 0.125x32x2.5 简便计算0.125x32x2.5=0.125x（4x8）x2.5=（0.125x8）x（2.5x4）=1X10=10