A mail-order house implemented a quality control procedure, which they hoped would result in less than five unfilled orders on hand at the end of each working day. Frequent checks of unfilled orders...

Extracted text: A mail-order house implemented a quality control procedure, which they hoped would result in less than five unfilled orders on hand at the end of each working day. Frequent checks of unfilled orders at the end of the day revealed that the distribution of unfilled orders approximated a Poisson distribution. Suppose that the average number of unfilled orders is 2 and calculate the probability of having fewer than five unfilled orders at the end of each day. Express your answer as a percentage rounded to 1 decimal place. Your Answer: Answer units