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Under a time crunch, you only have time to take a sample of 15 water bottles and measure their contents. The sample had a mean

Under a time crunch, you only have time to take a sample of 15 water bottles and measure their contents. The sample had a mean of 20.05 ounces with a sample standard deviation of 0.4 ounces. What would be the 90% confidence interval, when we assumed these measurements are normally distributed?

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