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12. A random sample with sample size n = 16 from a normal population yielded x = 10 and s = 5. Find a 95%

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A random sample with sample size n = 16 from a normal population yielded x = 10 and s = 5. Find a 95% confidence interval for the population mean f.Refer to Question 12. To test H0 : [.1 = 8 vs Ha : [.1 75 8, what is the observed value of the test statistic? \f\f

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