Mathematics, 27.04.2021 15:50, giannav57

BBM Bank wants to estimate the mean yearly salary. A sample of 15 employers shows that the sample means yearly salary to be 787 with population standard deviation 21. (answer to TWO decimal places)
Based on a 90% confidence level, the lower confidence limit for the population mean is:

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BBM Bank wants to estimate the mean yearly salary. A sample of 15 employers shows that the sample me...