The mean and standard deviation of a random sample of n measurements are equal to 34.2...
The mean and standard deviation of a random sample of n measurements are equal to 34.2 and 3.7 respectively. a. Find a 90% confidence interval for mu if n = 144 ( __ , ___) round to three decimal places as needed b. Find a 90% confidence interval for mu if n = 576 (___, ___) round to three decimal places as needed c. Find the widths of the condfidence intervals found in parts a and b. What is the...
The mean and standard deviation of a random sample of n measurements are equal to 33.2 and 3.1, respectively a. Find a 99% confidence interval for μ if n-81 b. Find a 99% confidence interval for μ if n-324. c. Find the widths of the confidence intervals found in parts a and b. What is the effect on the width of a confidence interval of quadrupling the sample size while holding the confidence coefficient fixed?
The mean and standard deviation of a random sample of n measurements are equal to 33.1 and 3.1, respectively. a. Find a 99% confidence interval for μ if n-100. b. Find a 99% confidence interval for if n : 400 c. Find the widths of the confidence intervals found in parts a and b. What is the effect on the width of a confidence interval of quadrupling the sample size while holding the confidence coefficient fixed? a. The 99% confidence...
The mean and standard deviation of a random sample of n measurements are equal to 34.7 and 3.6, respectively a. Find a 99% confidence interval for μ if n: 49. b. Find a 99% confidence interval for μ if n-196. c. Find the widths of the confidence intervals found in parts a and b. What is the effect on the width of a confidence interval of quadrupling the sample size while holding the confidence coefficient fixed? a. The 99% confidence...
The mean and standard deviation of a random sample of n measurements are equal to 34.7 and 3.2, respectively. a. Find a 90% confidence interval for μ if n=4949. b.Find a 90% confidence interval for μ if n=196. c. Find the widths of the confidence intervals found in parts a and b. What is the effect on the width of a confidence interval of quadrupling the sample size while holding the confidence coefficient fixed? a. The 90% confidence interval for...
The mean and standard deviation of a random sample of n measurements are equal to 33.3 and 3.3, respectively. a. Find a 95 % confidence interval for μ if n=144. b. Find a 95 % confidence interval for μ if n= 576 c. Find the widths of the confidence intervals found in parts a and b. What is the effect on the width of a confidence interval of quadrupling the sample size while holding the confidence coefficient fixed? a.The 95%...
The mean and standard deviation of a random sample of n measurements are respectively equal 3. to 33.9 and 3.3 a) Find a 99% confidence interval for μ if n-100 b) Find a 99% confidence interval for μ if n-400 c) Find the widths of the confidence intervals you calculated in parts a and b. What is the effect on the width of a confidence interval of quadrupling the sample size while holding the confidence level constant?
The mean and standard deviation of a random sample of n measurements are equal to 33.5 and 3.1, respectively. a. Find a 95% confidence interval for μ if n=49. b. Find a 95% confidence interval for μ if n=196. c. Find the widths of the confidence intervals found in parts a and b. What is the effect on the width of a confidence interval of quadrupling the sample size while holding the confidence coefficient fixed? a. The 95% confidence interval...
The mean and standard deviation of a random sample of n measurements are equal to 33.5 and 3.3, respectively. a. Find a 95% confidence interval for if n-49 b. Find a 95% confidence interval for if n-196. c. Find the widths of the confidence intervals found in parts a and b. What is the effect on the width of a confidence interval of quadrupling the sample size while holding the confidence coefficient fixed? a. The 95% confidence interval for μ...
The mean and standard deviation of a random sample of n measurements are equal to 34.1 and 3.5, respectively. a. Find a 90% confidence interval for mu if nequals64. b. Find a 90% confidence interval for mu if nequals256. c. Find the widths of the confidence intervals found in parts a and b. What is the effect on the width of a confidence interval of quadrupling the sample size while holding the confidence coefficient fixed?