A report in The Washington Post April 26 2009 stated
A report in The Washington Post (April 26, 2009) stated that the average age for men to marry in the United States is now 28 years of age. If the standard deviation is assumed to be 3.2 years, find the probability that a random sample of 40 U.S. men would show a mean age less than or equal to 27 years.
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