Question Barbara is a quality control inspector at a shoe factory. At the end of each day, she checks the number of imperfections found in sneakers. The table below represents the probability density function for the random variable X, the number of imperfections found in sneakers per day. Find the standard deviation of X. . Round the final answer to two decimal places. X P(X = X) 0 1/4 2 1/4 Reflect in ePortfolio