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In a certain region, the mean annual salary for HVAC contractors is $53,100. Let x be a random variable that represents a plumber's salary. Assume
In a certain region, the mean annual salary for HVAC contractors is $53,100. Let x be a random variable that represents a plumber's salary. Assume the standard deviation is $1745. If a random sample of 40 plumbers is selected, what is the probability that the sample mean is between $53,000 and $54,000? A. 0.64 B. 0.36 C. 0.22 D. 0.78
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Finite Mathematics and Its Applications
Authors: Larry J. Goldstein, David I. Schneider, Martha J. Siegel, Steven Hair
12th edition
978-0134768588, 9780134437767, 134768582, 134437764, 978-0134768632
