question archive The fuel consumption, in miles per gallon, of all cars of a particular model has a mean of 21 and a standard deviation of 5
The fuel consumption, in miles per gallon, of all cars of a particular model has a mean of 21 and a standard deviation of 5
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The fuel consumption, in miles per gallon, of all cars of a particular model has a mean of 21 and a standard deviation of 5. The population distribution can be assumed to be normal. A random sample of these cars is taken. Complete parts a and b below Click on the icon to view the standard normal table. a. Find the probability that the sample mean fuel consumption will be fewer than 20 miles per gallon if samples of 1, 4, and 9 are taken The probability for a sample of 1 observation is 0.3763 (Round to four decimal places as needed.)
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