The discrete random variable X counts the number of flaws in a manufactured object. This random variable has the following cumulative distribution (cdf).

a: 0 1 2 3 4 5 F(.'B) 0.3 0.5 0.75 0.85 0.95 1 What is the probability that there are at least 2 but no more than 4 flaws? For each flaw, it takes 14 minutes to repair the flaw. What is the expected repair time for these objects? Suppose that five of these objects are selected and inspected for flaws. Assume the number of flaws on any one object is independent of the number of flaws on any other object. What is the probability that all of these items have exactly one flaw? Calculate 02, the variance of X. The following image shows the boxplots for the marks (out of 100) earned by three classes (12.3) on a midterm