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

**Jessicasamide** · November 20th 2012, 10:32 AM

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

**pickslides** · November 20th 2012, 11:53 AM

Use $\displaystyle \bar{x}+Z_{1-\alpha}\times \frac{s}{\sqrt{n}}$

**Jessicasamide** · November 20th 2012, 11:58 AM

How do I find Z1 and a?

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

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