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Exercise 4 addressed coliform levels in water samples from a particular site. The coliform levels were assumed to vary according to a Normal distribution with

Exercise 4 addressed coliform levels in water samples from a particular site. The coliform levels were assumed to vary according to a Normal distribution with a mean of 10 organisms per liter and a standard deviation of 2 organisms per liter.

What is the 90^th percentile on this distribution?

	A.	10
	B.	12.56
	C.	14.56
	D.	10.56

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