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Math Help - Find a 90% one-sided upper confidence bound for the population mean μ for these value

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    Find a 90% one-sided upper confidence bound for the population mean μ for these value

    Find a 90% one-sided upper confidence bound for the population mean μ for these values. (Round your answers to two decimal places.)

    (a) n = 34, s2 = 66, x = 76


    (b) n = 100, s = 2.5, x = 1.4


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  2. #2
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    Re: Find a 90% one-sided upper confidence bound for the population mean μ for these v

    Use \displaystyle \bar{x}+Z_{1-\alpha}\times \frac{s}{\sqrt{n}}
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    Re: Find a 90% one-sided upper confidence bound for the population mean μ for these v

    How do I find Z1 and a?
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