Mathematics, 04.04.2020 11:07 preguntassimples
A study has indicated that the sample size necessary to estimate the average electricity use by residential customers of a large western utility company is 900 customers. Assuming that the margin of error associated with the estimate will be ±30 watts and the confidence level is stated to be 90 percent, what was the value for the population standard deviation?
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A study has indicated that the sample size necessary to estimate the average electricity use by resi...
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