The mean selling price of new homes in a city over a year was $115,000. The population standard devi
Question: The fuel consumption, in miles per gallon, of all cars of a particular model has mean 25 and standard deviation 2. The population distribution can be assumed to be normal. A random sample of cars is taken. Find the probability that the sample mean fuel consumption is less that 24 miles per gallon if:
(a) A sample of one observation is taken.
(b) A sample of four observations is taken
(c) A sample of sixteen observations is taken
(d) A sample of one hundred observations is taken.
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