8.27 Find a (1a)100% confidence interval for a population mean for these values: = a. a 0.01,...

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8.27 Find a (1a)100% confidence interval for a population mean for these values: =

a. a 0.01, n = 38, x = 34, s = 12

b. a 0.10, n = 65, x=1049, s2=51 =

c. = 0.05, n = 89, = 66.3, s = 2.48

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