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QUESTION 27 Consider the following sample of 8 observations drawn from a normal population with unknown mean and standar
Posted: Sun Jul 10, 2022 10:10 am
by answerhappygod
- Question 27 Consider The Following Sample Of 8 Observations Drawn From A Normal Population With Unknown Mean And Standar 1 (27.03 KiB) Viewed 93 times
QUESTION 27 Consider the following sample of 8 observations drawn from a normal population with unknown mean and standard deviation: 22, 18, 14, 25, 17, 28, 15, 21. (a) Calculate the sample mean and the sample standard deviation. (b) Calculate the 95% confidence interval for the population mean. (c) What happens to the confidence interval if the confidence level increases from 95% to 99%? (4) (2) (4)