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Mathematics, 30.07.2021 03:20 t0ri21
The mean gross annual incomes of certified welders are normally distributed with the mean of $20,000 and a standard deviation of $2,000. The ship building association wishes to find out whether their welders earn more or less than $20,000 annually. The alternate hypothesis is that the mean is not $20,000.
Required:
What is the alternate hypothesis?
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The mean gross annual incomes of certified welders are normally distributed with the mean of $20,000...
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