statistics

13. Given the probability density function f() = 5 over the interval [1, 4), find the expected value the mean, the variance and the standard deviation. Expected value: Mean: Variance: Standard Deviation: 14. Consider the probability density curve plotted below: Density Curve 0.22 0.2 0.18 0.16 -0.14 0.12 0.1 0.08 0.06 0.04 0.02 25 26 27 28 29 30 31 X Q Find P(X 28)