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Corporate sustainability of CPA firms. Refer to
Chapter 7, Problem 32E(choose chapter or problem)
Corporate sustainability of CPA firms. Refer to the Business and Society (March 2011) study on the sustainability behaviors of CPA corporations, Exercise 6.12 (p. 308). 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. The data (where higher point values indicate a higher level of support for sustainability) are saved in the accompanying file. The CEO of a CPA firm claims that the true mean level of support for sustainability is 75 points.
a. Specify the null and alternative hypotheses for testing this claim.
b. For this problem, what is a Type I error? A Type II error?
c. The XLSTAT printout on the following page gives the results of the test. Locate the test statistic and p-value on the printout.
d. At \(\alpha = .05\) give the appropriate conclusion.
e. What assumptions, if any, about the distribution of support levels must hold true in order for the inference derived from the test to be valid? Explain.
Text Transcription:
alpha = .05
Questions & Answers
QUESTION:
Corporate sustainability of CPA firms. Refer to the Business and Society (March 2011) study on the sustainability behaviors of CPA corporations, Exercise 6.12 (p. 308). 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. The data (where higher point values indicate a higher level of support for sustainability) are saved in the accompanying file. The CEO of a CPA firm claims that the true mean level of support for sustainability is 75 points.
a. Specify the null and alternative hypotheses for testing this claim.
b. For this problem, what is a Type I error? A Type II error?
c. The XLSTAT printout on the following page gives the results of the test. Locate the test statistic and p-value on the printout.
d. At \(\alpha = .05\) give the appropriate conclusion.
e. What assumptions, if any, about the distribution of support levels must hold true in order for the inference derived from the test to be valid? Explain.
Text Transcription:
alpha = .05
ANSWER:Step 1 of 5
a. Based on the study on the CPA firms’ behaviors and the given data, the null and alternative hypothesis is shown below:
