A company's sales force makes 400 sales calls, with 0.15 probability that a sale will be made on a call.
What is the probability that between 50 (inclusive) and 70 (inclusive) sales will be made? What is the probability that less than 70 sales will be made? What is the probability that greater than 50 but less than 70 sales will be made? What is the probability that more than 70 sales will be made? What is the probability that exactly 70 sales will be made?