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atıl NW 6.12 CORPORATE SUSTAINABILITY OF CPA FIRMS. Corporate sustainability refers to business practices designed CORSUS around social and environmental considerations. Refer to the Business and Society (March 2011) study on the sustainability behaviors of CPA corporations, Exercise 2.23 (p. 59). Recall that the level of support for corporate sustainability (measured on a quantitative scale ranging from 0 to 160 points) was obtained for each in a sample of 992 senior managers at CPA firms. Higher point values indicate a higher level of support for sustainability. The accompanying StatCrunch printout gives a 99% confidence interval for the mean level of support for all senior managers at CPA firms. One sample T confidence interval: μ: Mean of variable 99% confidence interval results: Variable Sample Mean Std. Err. DF L. Limit U. Limit Support 67.75504 0.85314633 991 65.553241 69.95684 a. Locate the 99% confidence interval on the printout. b. Use the sample mean and standard deviation on the printout to calculate the 99% confidence interval. Does your result agree with the interval shown on the printout? c. Give a practical interpretation of the 99% confidence interval. d. Suppose the CEO of a CPA firm claims that the true mean level of support for sustainability is 75 points. Do you believe this claim? Explain.

atıl NW 6.12 CORPORATE SUSTAINABILITY OF CPA FIRMS. Corporate sustainability refers to business practices designed CORSUS around social and environmental considerations. Refer to the Business and Society (March 2011) study on the sustainability behaviors of CPA corporations, Exercise 2.23 (p. 59). Recall that the level of support for corporate sustainability (measured on a quantitative scale ranging from 0 to 160 points) was obtained for each in a sample of 992 senior managers at CPA firms. Higher point values indicate a higher level of support for sustainability. The accompanying StatCrunch printout gives a 99% confidence interval for the mean level of support for all senior managers at CPA firms. One sample T confidence interval: μ: Mean of variable 99% confidence interval results: Variable Sample Mean Std. Err. DF L. Limit U. Limit Support 67.75504 0.85314633 991 65.553241 69.95684 a. Locate the 99% confidence interval on the printout. b. Use the sample mean and standard deviation on the printout to calculate the 99% confidence interval. Does your result agree with the interval shown on the printout? c. Give a practical interpretation of the 99% confidence interval. d. Suppose the CEO of a CPA firm claims that the true mean level of support for sustainability is 75 points. Do you believe this claim? Explain.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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**NJVJ 6.12 CORPORATE SUSTAINABILITY OF CPA FIRMS** *Corporate sustainability* refers to business practices designed around social and environmental considerations. Refer to the *Business and Society* (March 2011) study on the sustainability behaviors of CPA corporations. Exercise 2.23 (p. 59). Recall that the level of support for corporate sustainability (measured on a quantitative scale ranging from 0 to 160 points) was obtained for each in a sample of 992 senior managers at CPA firms. Higher point values indicate a higher level of support for sustainability. The accompanying StatCrunch printout gives a 99% confidence interval for the mean level of support for all senior managers at CPA firms. **One sample T confidence interval:** μ : Mean of variable **99% confidence interval results:** | Variable | Sample Mean | Std. Err | DF | L. Limit | U. Limit | |----------|-------------|----------|-----|----------|----------| | Support | 67.75504 | 0.85314633 | 991 | 65.553241 | 69.95684 | a. Locate the 99% confidence interval on the printout. b. Use the sample mean and standard deviation on the printout to calculate the 99% confidence interval. Does your result agree with the interval shown on the printout? c. Give a practical interpretation of the 99% confidence interval. d. Suppose the CEO of a CPA firm claims that the true mean level of support for sustainability is 75 points. Do you believe this claim? Explain.
Transcribed Image Text:**NJVJ 6.12 CORPORATE SUSTAINABILITY OF CPA FIRMS** *Corporate sustainability* refers to business practices designed around social and environmental considerations. Refer to the *Business and Society* (March 2011) study on the sustainability behaviors of CPA corporations. Exercise 2.23 (p. 59). Recall that the level of support for corporate sustainability (measured on a quantitative scale ranging from 0 to 160 points) was obtained for each in a sample of 992 senior managers at CPA firms. Higher point values indicate a higher level of support for sustainability. The accompanying StatCrunch printout gives a 99% confidence interval for the mean level of support for all senior managers at CPA firms. **One sample T confidence interval:** μ : Mean of variable **99% confidence interval results:** | Variable | Sample Mean | Std. Err | DF | L. Limit | U. Limit | |----------|-------------|----------|-----|----------|----------| | Support | 67.75504 | 0.85314633 | 991 | 65.553241 | 69.95684 | a. Locate the 99% confidence interval on the printout. b. Use the sample mean and standard deviation on the printout to calculate the 99% confidence interval. Does your result agree with the interval shown on the printout? c. Give a practical interpretation of the 99% confidence interval. d. Suppose the CEO of a CPA firm claims that the true mean level of support for sustainability is 75 points. Do you believe this claim? Explain.
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