A factory process requires 3 steps to finish a product. The steps each have a mean completion time of h = 10 seconds and a standard deviation of o = 5 seconds. The time it takes to complete each step is

independent from the other steps. Let T be the total completion time of the 3 steps on a randomly chosen

product.

Find the mean of T.

pir=

seconds

Period is the time it takes for one “cycle” to complete. in the parent sine function, period is 2*pi since sin(0) = 0, sin(pi/2) = 1, sin(pi) = 0, sin(3pi/2) = -1, and sin(2pi) = 0. at that point, the sequence repeats itself. i’m not sure if your graph is similar to the sine function since you didn’t provide a picture, but you can find the period by looking at a graph.