Probability that the random sample mean will equal per liter, Basic Statistics

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Probability that the random sample mean will equal per liter

Assume a river's alkalinity level is normally distributed with mean 50 milligrams per liter and standard deviation 3.2 milligrams per liter.

a) What is the probability that a river's alkalinity level is greater than 48.4 milligrams per liter?

b) Suppose a random sample of 6 rivers is selected and the alkalinity level of each is measured. What is the probability that the random sample mean will be greater than 48.4 milligrams per liter?

c) Suppose a random sample of 6 rivers is selected and the alkalinity level of each is measured. What is the probability that the random sample mean will equal 48.4 milligrams per liter?

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Basic Statistics: Probability that the random sample mean will equal per liter

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Basic Statistics: Probability that the random sample mean will equal per liter

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