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QUESTION
The mean per capita income is 20,908 dollars per annum with a standard deviation of 407 dollars per annum.
The mean per capita income is 20,908 dollars per annum with a standard deviation of 407 dollars per annum. What is the probability that the sample mean would be less than 20,948 dollars if a sample of 55 persons is randomly selected? Round your answer to four decimal places.
