Over the weekend Pop's Pizza Shack sold 53 pepperoni, 43 sausage, 61 cheese, 42 mushroom, 48 hamburger and 41 combination pizzas. What is the range in the number of types of pizzas sold? A) 20 B) 22 C) 24 D) 26

The weekly amount spent by a company for travel has an approximately normal distribution with mean = $550 and standard deviation = $40. a) what is the probability that the actual weekly expense will exceed $570 for more than 20 weeks during the next year? (note: one year = 52 weeks) b) what is the probability that actual weekly expenses exceed $580 for 10 or more, but 16 or fewer weeks during the next year?