Suppose a product must go through an assembly line made up of five sequential and independent operations. The time it takes to complete each operation is normally distributed with a mean of 180 seconds and a standard deviation of 5 seconds. The flow time is defined as the total time it takes a product to go through the five operations in the assembly line from start to finish.
Show the probability that the flow time is 915 seconds or less on the histogram, and include the statistics as well.