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(1 point) Working backwards, Part I. A 90% confidence interval for a population mean is (70, 76). The population distribution is approximately normal and the population standard deviation is unknown. This confidence interval is based on a simple random sample of 26 observations. Calculate the sample mean, the margin of error, and the sample standard deviation. Use the t distribution in any calculations. Round non-integer results to 4 decimal places.
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(1 point) Working backwards, Part I. A 90% confidence interval for a population mean is (70, 76). Th...
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