Please find attached d. Use the result, part a, to calculate the 90% confidenceinterval for o. Does your result agree with the intervalshown on the printout?e. Give a practical interpretation of the 90% confidenceinterval for o.f. What assumption about the distribution of level of sup-port is required for the inference, part e, to be valid? Isthis assumption reasonably satisfied? (Use your answerto Exercise 4.125, p. 246.) 6.98 Corporate sustainability of CPA firms. Refer to theBusiness and Society (March 2011) study on the sus-CORSUS tainability behaviors of CPA corporations, Exercise 6.12NW (p. 315). Recall that the level of support for corporatesustainability (measured on a quantitative scale rangingfrom 0 to 160 points) was obtained for each in a sampleof 992 senior managers at CPA firms. The accompanyingMinitab printout gives 90% confidence intervals for boththe variance and standard deviation of level of support forall senior managers at CPA firms.StatisticsVariableStDev VarianceSupport99226.972290 Confidence IntervalsCI forCI forVariable MethodStDevVarianceSupportChi-Square(25.9, 27.9)(672, 779)a. Locate the 90% confidence interval for o on the print-out. Interpret the result.b. Use the sample variance on the printout to calculatethe 90% confidence interval for o. Does your resultagree with the interval shown on the printout?c. Locate the 90% confidence interval for o on the print-out.

Name: Please find attached d. Use the result, part a, to calculate the 90% c
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Description: Please find attached d. Use the result, part a, to calculate the 90% confidenceinterval for o. Does your result agree with the intervalshown on the printout?e. Give a practical interpretation of the 90% confidenceinterval for o.f. What assumption abo