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Mathematics, 16.07.2019 05:20 ayoismeisalex
Suppose your marketing colleague used a known population mean and standard deviation to compute the standard error as 56.8 for samples of a particular size. you don't know the particular sample size but your colleague told you that the sample size is greater than 60. your boss asks what the standard error would be if you triple the sample size. what is the standard error for the new sample size?
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Sherina wrote and solved the equation. x-56=230 x-56-56=230-56 x=174 what was sherina’s error? sherina’s work is correct. sherina only needed to subtract 56 from 230. sherina made a subtraction error when subtracting 56 from 230. sherina should have added 56 to both sides of the equation.
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