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

• Nov 20th 2012, 10:32 AM
Jessicasamide
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

• Nov 20th 2012, 11:53 AM
pickslides
Re: Find a 90% one-sided upper confidence bound for the population mean μ for these v
Use $\displaystyle \bar{x}+Z_{1-\alpha}\times \frac{s}{\sqrt{n}}$
• Nov 20th 2012, 11:58 AM
Jessicasamide
Re: Find a 90% one-sided upper confidence bound for the population mean μ for these v
How do I find Z1 and a?