16. Arsenic in Rice Listed below are amounts of arsenic (ug, or micrograms, per serving) in samples of brown rice from California (based on data from the Food and Drug Administration). Use a 90%...

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Extracted text: 16. Arsenic in Rice Listed below are amounts of arsenic (ug, or micrograms, per serving) in samples of brown rice from California (based on data from the Food and Drug Administration). Use a 90% confidence level. The Food and Drug Administration also measured amounts of ar- senic in samples of brown rice from Arkansas. Can the confidence interval be used to describe arsenic levels in Arkansas? 5.4 5.6 8.4 7.3 4.5 7.5 1.5 5.5 9.1 8.7


Extracted text: Confidence Intervals. In Exercises 9–-24, construct the confidence interval estimate of the mean.