Question: 99% confidence; n = 7, x = 0.12, s = 0.04 (original values are nitrogenoxide emissions in grams mile, from the Environmental Protection Agency) Use

99% confidence; n = 7, x = 0.12, s = 0.04 (original values are nitrogenoxide emissions in grams mile, from the Environmental Protection Agency)

Use the given confidence level and sample data to find (a) the margin of error and (b) the confidence interval for the population mean μ. Assume that the sample is a simple random sample and the population has a normal distribution.

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