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Mathematics, 23.10.2019 22:30 jacksolo

The blood pressure (average of systolic and diastolic measurements) of each of 20 randomly selected persons was measured. the results were: 30, 38, 51, 32, 50, 23, 37, 24, 21, 67, 45, 47, 34, 36, 32, 29, 49, 55, 65, 41 construct a 95% confidence interval for the true mean blood pressure. what is the lower bound?

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