Question: The new tire you bought for your car is guaranteed
The new tire you bought for your car is guaranteed to last an average of 25,000 kilometres. Your new tire wears prematurely, so you talk the tire store owner into surveying a random sample of 19 other tire buyers. When you survey them to see how long their tires lasted, and add your own disappointing result, you find an average of 24,000 kilometres. Assume that the tire life is a variable with a standard deviation of 500 kilo metres. Do you think you could successfully sue the company for false advertising? (Be careful!)
Answer to relevant QuestionsA local bank claims that it takes no more than 1.5 working days on average to approve loan requests. Examination of the bank's records for 64 randomly selected loan requests produced a sample mean of 1.8 working days. Assume ...A college is considering making the purchase of a laptop computer a requirement for some of its programs. In the past, only 20% of students owned laptop computers. A random sample of 300 students revealed that 77 of them had ...An analyst in a government ministry is interested in the average cost of textbooks per semester for a college student. A previous estimate suggests that the average cost of textbooks per semester is $700.The analyst wants to ...A company that produces stereo equipment for home listening is interested in the average age of the equipment in the homes of so-called baby boomers. A random sample of 60 baby boomer households was surveyed. The average age ...A toy manufacturer receives large shipments of electronic components that will be used in the dolls that it makes. It is too expensive to test every component to see whether it functions properly, so the manufacturer ...
Post your question