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A car company made a change to their fuel injection system that may improve gas mileage. To determine if this was the case, they selected 24 new cars at random from several days of production. The cars were randomly assigned to two groups of 12 cars each. One of these groups was fitted with the experimental fuel injection system, and the second was fitted with the current fuel injection system.All the cars were driven around the same predetermined route, whose distance was known. By dividing the quantity of gas used by this driving distance, the automobile company was able to determine the gas mileage of each car. In summarizing the results, they found that the cars with the experimental fuel injection system had an average gas mileage of 33.4 mi/gal with a standard deviation of 1.3 mi/gal. Cars fitted with the current fuel injection system had an average gas mileage of 28.6 mi/gal with a standard deviation of 2.0 mi/gal.
MATH1550H: Assignment: Question: A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..
MATH1550H: Assignment: Question: what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?
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