A random sample of 15 ion exchangers has a mean lifetime of 1749 hours with a standard deviation of 103 hours. Construct

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answerhappygod
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A random sample of 15 ion exchangers has a mean lifetime of 1749 hours with a standard deviation of 103 hours. Construct

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A random sample of 15 ion exchangers has a mean lifetime of 1749 hours with a standard deviation of 103 hours. Construct a 90% confidence interval for the mean lifetime, μ, of all exchangers of this type. Assume the population has a normal distribution.
(1697, 1801)
(1702, 1796)
(1676, 1822)
(1707, 1791)
(1680, 1818)
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