### lB Calculate the mean, the variance, and the standard deviation of this distribution. '{F} ### 10 Make a graph of the distribution of $X$. Use 'geom_segment()' to place vertical segments of the probability at each 'x' location. Add a solid vertical line at the mean and dashed vertical lines 1, 2, and 3 standard deviations above and below the mean. '{F} ### 1D What is the probability that $X$ is within one standard deviation of the mean of its distribution? \"{F} ### 2 Suppose you have a random variable $X \\sim \\text{Binomial}(120, 0.2)$. ### 2A Calculate and report the mean and standard deviation of the distribution. '{I'}