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A researcher must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures: 51.9 91.1 122
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PAGE NO. Solution: - Given that, u=8 Sample mean x = EX - 718.6 713.6 - 89.2 ke dample Standard deviation El (Xi- X² u-g (51.PAGE NO. Hese, n = 8 x = 89.2 8 = 21.552 at At 95% Confidence internal for t df = nga 7 1-0.95 = 0.05 a 0.05. - 0.025 na 2.36

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