Listed below are amounts of arsenic (in micrograms per serving) in samples of brown rice. You may assume that the data is collected from a population that is normally distributed. Suppose the population standard deviation is know to be a 3.2. Construct a 95% confidence interval for the mean amount of arsenic in brown rice. 5.4 5.6 8.4 7.3 4.5 7.5 1.5 5.5 9.1 8.7 Round your answer to 3 decimal places. O (5.002, 7.698) (5.004, 7.706) O (4.620, 8.079) O (4.687, 8.013) O (4.367, 8.333)