From past experience, an airline has found the luggage weight for individual air travelers on its trans- Atlantic route to have a mean of 80 pounds and a standard deviation of 20 pounds. The plane is consistently fully booked and holds 100 passengers. The pilot insists on loading an extra 500 pounds of fuel whenever the total luggage weight exceeds 8300 pounds. On what percentage of the flights will she end up having the extra fuel loaded?
Answer to relevant QuestionsA hardware store chain has just received a truckload of 5000 electric drills. Before accepting the shipment, the purchasing manager insists that 9 of the drills be randomly selected for testing. He intends to measure the ...According to the Newspaper Association of America, the average visitor to online newspaper sites spends 45 minutes per month reading online news content. Assuming a population standard deviation of 10 minutes and a simple ...A mail-order discount outlet for running shoes has found that 20% of the orders sent to new customers end up being returned for refund or exchange because of size or fit problems experienced by the customer. The 100-member ...A firm’s receiving department has just taken in a shipment of 300 generators, 20% of which are defective. The quality control inspector has been instructed to reject the shipment if, in a simple random sample of 40, 15% or ...In 2009, the average fee paid by H&R Block tax preparation customers was $187. Assume that the standard deviation of fees was $60 but that we have no idea regarding the shape of the population distribution. a. What ...
Post your question