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1. A random sample of 30 sandwiches from a fast food restaurant has a mean of 1042.7 milligrams of sodium and a standard deviation of

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1. A random sample of 30 sandwiches from a fast food restaurant has a mean of 1042.7 milligrams of sodium and a standard deviation of 344.9 milligrams of sodium. Construct the 88% confidence interval for the mean amount of sodium in the sandwiches. Find a Find the z-score for a/2 Use the formula EBM = N to find EBM . Construct the confidence interval in form of (X - EBM, x + EBM) Write the conclusion: We estimate with confidence that the true population mean is between and

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