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To build a 98% CI for the mean of a population, you take a random sample and find these values: " 21.1 19.5 13 23.8 20.4 16.3 19.8 18.1 18.1 20.2 19.1 14.1 22.6 17.9 19.2 13.6 17.6 24.4 21.9 14.7 What is the Margin of Error, E? Round the Critical Value and your answer to three decimals. Submit Question
To build a 90% CI for the mean of a population, you take a random sample of 29 values and find that the sample mean is 225.9 with standard deviation 11.3. Round all intermediate calculations (including the critical value, Tc) to two decimals, then construct the CI and enter like this: (min,max). Be sure to include the parentheses or you will be marked wrong. Note: if you use a built-in Cl command on a calculator/computer, you might get marked wrong due to rounding. Use the formulas given in the text/notes. Submit Question
To build a 95% CI for the mean of a population, you take a random sample of 22 values and find that the sample mean is 283.7 with standard deviation 12.8. Round all intermediate calculations (including the critical value, Tc) to two decimals, then construct the CI and enter like this: (min,max). Be sure to include the parentheses or you will be marked wrong. Note: if you use a built-in Cl command on a calculator/computer, you might get marked wrong due to rounding. Use the formulas given in the text/notes. Submit Question