题目:
A manufacturer of a certain product can expect that between 0.3 percent and 0.5 percent of the units manufactured will be defective. If the retail price is $2,500 per unit and the manufacturer offers a full refund for defective units, how much money can the manufacturer expect to need to cover the refunds on 20,000 units?
选项:
A、Between $15,000 and $25,000
B、Between $30,000 and $50,000
C、Between $60,000 and $100,000
D、Between $150,000 and $250,000
E、Between $300,000 and $500,000
答案:
D