supose you want to find the confidence interval for the mean. 1. when would you use...
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supose you want to find the confidence interval for the mean.
1. when would you use...
Answer the following questions Description Suppose you want to find the confidence interval for the mean....
Answer the following questions
Description Suppose you want to find the confidence interval for the mean. 1) When would you use the formula involving the t? 2) When would you use the formula involving the z? 3) If sigma is known, n < 30, and you have no information about the population distribution. Which of the following choices would be the correct course of action to take to find the confidence interval? (a) Use the t-formula (b) Use the z-formula...
answer the following questions Description Suppose you want to find the confidence interval for the mean....
answer the following questions
Description Suppose you want to find the confidence interval for the mean. 1) When would you use the formula involving the t? 2) When would you use the formula involving the z? 3) If sigma is known, n < 30, and you have no information about the population distribution. Which of the following choices would be the correct course of action to take to find the confidence interval? (a) Use the t-formula (b) Use the z-formula...
We use the t distribution to construct a confidence interval for the population mean when the...
We use the t distribution to construct a confidence interval for the population mean when the underlying population standard deviation is not known. Under the assumption that the population is normally distributed, find tα/2,df for the following scenarios. (You may find it useful to reference the t table. Round your answers to 3 decimal places.) tα/2,df a. A 90% confidence level and a sample of 25 observations. b. A 95% confidence level and a sample of 25 observations.
If we want to provide a 90% confidence interval for the mean of a population and...
If we want to provide a 90% confidence interval for the mean of a population and the population standard deviation is known, the correct Z value is 0.95 1.96 0.485 1.645
We use the t distribution to construct a confidence interval for the population mean when the...
We use the t distribution to construct a confidence interval for the population mean when the underlying population standard deviation is not known. Under the assumption that the population is normally distributed, find tα/2,df for the following scenarios. (You may find it useful to reference the t table. Round your answers to 3 decimal places.) a. A 90% confidence level and a sample of 13 observations. b. A 95% confidence level and a sample of 13 observations. c. A 90%...
We use the t distribution to construct a confidence interval for the population mean when the...
We use the t distribution to construct a confidence interval for the population mean when the underlying population standard deviation is not known. Under the assumption that the population is normally distributed, find ta/2, df for the following scenarios. (You may find It useful to reference the t table. Round your answers to 3 decimal places.) ta/2,df a. A 95 confidence level and a sample of 23 obeervations. b. A 99% confidence level and a sample of 23 observations. e....
We use the t distribution to construct a confidence interval for the population mean when the...
We use the t distribution to construct a confidence interval for the population mean when the underlying population standard deviation is not known. Under the assumption that the population is normally distributed, find tα/2,df for the following scenarios. (You may find it useful to reference the t table. Round your answers to 3 decimal places.) tα/2,df a. A 90% confidence level and a sample of 25 observations. b. A 95% confidence level and a sample of 25 observations. c. A...
We use the t distribution to construct a confidence interval for the population mean when the...
We use the t distribution to construct a confidence interval for the population mean when the underlying population standard deviation is not known. Under the assumption that the population is normally distributed, find ta/2, df for the following scenarios. (You may find it useful to reference the t table. Round your answers to 3 decimal places.) ta/2,df a. b. 2.228 A 90% confidence level and a sample of 11 observations. A 95% confidence level and a sample of 11 observations....
We use the t distribution to construct a confidence interval for the population mean when the...
We use the t distribution to construct a confidence interval for the population mean when the underlying population standard deviation is not known. Under the assumption that the population is normally distributed, find t??2,df for the following scenarios. Use Table 2. (Round your answers to 3 decimal places.) t?/2,df a. A 90% confidence level and a sample of 21 observations. b. A 95% confidence level and a sample of 21 observations. c. A 90% confidence level and a...
When finding confidence interval for mu , if population standard deviation (sigma) is known, we use...
When finding confidence interval for mu , if population standard deviation (sigma) is known, we use z interval; otherwise, we choose t interval. True False
Answer the following questions
Description Suppose you want to find the confidence interval for the mean. 1) When would you use the formula involving the t? 2) When would you use the formula involving the z? 3) If sigma is known, n < 30, and you have no information about the population distribution. Which of the following choices would be the correct course of action to take to find the confidence interval? (a) Use the t-formula (b) Use the z-formula...
answer the following questions
Description Suppose you want to find the confidence interval for the mean. 1) When would you use the formula involving the t? 2) When would you use the formula involving the z? 3) If sigma is known, n < 30, and you have no information about the population distribution. Which of the following choices would be the correct course of action to take to find the confidence interval? (a) Use the t-formula (b) Use the z-formula...
If we want to provide a 90% confidence interval for the mean of a population and the population standard deviation is known, the correct Z value is 0.95 1.96 0.485 1.645
We use the t distribution to construct a confidence interval for the population mean when the underlying population standard deviation is not known. Under the assumption that the population is normally distributed, find ta/2, df for the following scenarios. (You may find It useful to reference the t table. Round your answers to 3 decimal places.) ta/2,df a. A 95 confidence level and a sample of 23 obeervations. b. A 99% confidence level and a sample of 23 observations. e....
We use the t distribution to construct a confidence interval for the population mean when the underlying population standard deviation is not known. Under the assumption that the population is normally distributed, find ta/2, df for the following scenarios. (You may find it useful to reference the t table. Round your answers to 3 decimal places.) ta/2,df a. b. 2.228 A 90% confidence level and a sample of 11 observations. A 95% confidence level and a sample of 11 observations....
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