The bottlers of a new fruit juice daily select a random sample of 12 bottles of the drink to estimate the mean quantity of juice in the bottles filled that day.  On one such day, a sample was taken with a sample mean of 12.03 and a sample standard deviation of 0.12.  Based on this information, what is the margin of error associated with a 90% confidence interval estimate for the population mean, if the population standard deviation has historically been 0.07?     0.020   0.070   0.040   0.033

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