Sherry wishes to analyze accounting firms' revenues. In particular, she is concerned about whether there is...

Transcribed Image Text:

Sherry wishes to analyze accounting firms' revenues. In particular, she is concerned about whether there is a significant mean difference between the accounting firm revenues of 2021 and 2022. The number of firms analyzed for years 2021 and 2022 are 50 and 100 respectively, but not all the firms' revenues are the same in 2021. The sample mean accounting firm revenues for 2021 and 2022 are $200,000 thousand and $200,200 thousand respectively, while the sample variances accounting firm revenues for 2021 and 2022 are 1,000 and 1,800 respectively. Assume alpha= 0.05. Before Sherry conducts the hypothesis test about 2 means, she wishes to conduct a hypothesis test to determine if the variances are different. She identifies the critical value to be 1.53. 1) The test statistic for the hypothesis test about the ratio of 2 variances is. Round to two decimal place. 2) Using the results in question 1), what is the conclusion of the hypothesis test in question 1)? OA. Fail to reject the null hypothesis because the test statistic is less than the critical value. B. Reject the null hypothesis, because the test statistic is greater than the critical value. C. Reject the null hypothesis because the test statistic is less than the critical value. OD. Fail to reject the null hypothesis because the test statistic is greater than the critical value. 3) What type of error could you commit from your decision in question 2)? OA. Type 1 Error because the null hypothesis is rejected OB. Type 1 Error because the null hypothesis is not rejected OC. Type 2 Error because the null hypothesis is not rejected. O D. Type 2 Error because the null hypothesis is rejected 4) Based on the above analysis performed in questions 1-3), which test should Sherry perform to test the difference between 2 mean accounting firm revenues? OA. Pooled Variance T test OB. 2 Sample Proportion Z test OC. Separate Variance T test O D. Paired Variance T test 5) What type of test should Sherry Perform as stated in question 4)? OA. No Tail OB. Two Tail Sherry wishes to analyze accounting firms' revenues. In particular, she is concerned about whether there is a significant mean difference between the accounting firm revenues of 2021 and 2022. The number of firms analyzed for years 2021 and 2022 are 50 and 100 respectively, but not all the firms' revenues are the same in 2021. The sample mean accounting firm revenues for 2021 and 2022 are $200,000 thousand and $200,200 thousand respectively, while the sample variances accounting firm revenues for 2021 and 2022 are 1,000 and 1,800 respectively. Assume alpha= 0.05. Before Sherry conducts the hypothesis test about 2 means, she wishes to conduct a hypothesis test to determine if the variances are different. She identifies the critical value to be 1.53. 1) The test statistic for the hypothesis test about the ratio of 2 variances is. Round to two decimal place. 2) Using the results in question 1), what is the conclusion of the hypothesis test in question 1)? OA. Fail to reject the null hypothesis because the test statistic is less than the critical value. B. Reject the null hypothesis, because the test statistic is greater than the critical value. C. Reject the null hypothesis because the test statistic is less than the critical value. OD. Fail to reject the null hypothesis because the test statistic is greater than the critical value. 3) What type of error could you commit from your decision in question 2)? OA. Type 1 Error because the null hypothesis is rejected OB. Type 1 Error because the null hypothesis is not rejected OC. Type 2 Error because the null hypothesis is not rejected. O D. Type 2 Error because the null hypothesis is rejected 4) Based on the above analysis performed in questions 1-3), which test should Sherry perform to test the difference between 2 mean accounting firm revenues? OA. Pooled Variance T test OB. 2 Sample Proportion Z test OC. Separate Variance T test O D. Paired Variance T test 5) What type of test should Sherry Perform as stated in question 4)? OA. No Tail OB. Two Tail

Answer rating: 100% (QA)

The detailed answer for the above question is provided below ANSWER Here are the answers to your questions 1 The test statistic for the hypothesis test about the ratio of 2 variances is S22S12 1800100... View the full answer