document.write( "Question 776317: is 40 years old. He asks you to test his thinking. You collect a sample of 50 customers and found that the average age is 38.7. Assuming that the population standard deviation is 12.5 years and using α = 0.05, test your manager's hypothesis. What is your conclusion?
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document.write( "H0
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document.write( "μ = 40
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document.write( "H1
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document.write( "μ < 40
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