Question 4.151

4.151 Blood bag demand.

CASE 4.2 Refer to the distribution of daily demand for blood bags in Case 4.2 (pages 210–211). Assume that demand is independent from day to day.

  1. What is the probability at least one bag will be demanded every day of a given month? Assume 30 days in the month.
  2. What is the interpretation of one minus the probability found part (a)?
  3. What is the probability that the bank will go a whole year (365 days) without experiencing a demand of 12 bags on a given day?

4.151

(a) 0.0011484. (b) “At least one day will demand 0 bags.” (c) 0.3340.