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Canvas ←→ X O p-value (Two Tail) D H&R Block believes the proportion of tax returns submitted to the IRS with errors has increased over the years. So, an auditor for H&R Block randomly selected a sample of 320 tax returns submitted to the IRS from tax year 1995 and 180 tax returns submitted to the IRS from tax year 2005. He classified the returns as "Error" or "No Error" and recorded his findings in Excel. Can H&R Block prove that the difference in the proportion of tax returns submitted to the IRS with errors has decreased over this 10-year period at a=0.05? State the hypothesis in terms of 2005 - 1995. Use the correct excel output above to answer the following question. Find the test statistic. Question 7 8.33 pts W PS 7 ple COUN Canvas D Question 6 8.33 pts 2005 1995 Sample Size 180 320 Count for Response Sample Proportion 0.1500 0.2500 Confidence Interval (in terms of 2005 - 1995) Confidence Coefficient 0.95 Lower Limit -0.1705 Upper Limit -0.0295 Hypothesis Test (in terms of 2005 - 1995) W Hypothesized Value 0 Pooled Sample Proportion Test Statistic p-value (Lower Tail) 0.0044 n-value (Unner Tail) H B COUN

Canvas ←→ X O p-value (Two Tail) D H&R Block believes the proportion of tax returns submitted to the IRS with errors has increased over the years. So, an auditor for H&R Block randomly selected a sample of 320 tax returns submitted to the IRS from tax year 1995 and 180 tax returns submitted to the IRS from tax year 2005. He classified the returns as "Error" or "No Error" and recorded his findings in Excel. Can H&R Block prove that the difference in the proportion of tax returns submitted to the IRS with errors has decreased over this 10-year period at a=0.05? State the hypothesis in terms of 2005 - 1995. Use the correct excel output above to answer the following question. Find the test statistic. Question 7 8.33 pts W PS 7 ple COUN Canvas D Question 6 8.33 pts 2005 1995 Sample Size 180 320 Count for Response Sample Proportion 0.1500 0.2500 Confidence Interval (in terms of 2005 - 1995) Confidence Coefficient 0.95 Lower Limit -0.1705 Upper Limit -0.0295 Hypothesis Test (in terms of 2005 - 1995) W Hypothesized Value 0 Pooled Sample Proportion Test Statistic p-value (Lower Tail) 0.0044 n-value (Unner Tail) H B COUN

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 3GP
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Canvas ←→ X O p-value (Two Tail) D H&R Block believes the proportion of tax returns submitted to the IRS with errors has increased over the years. So, an auditor for H&R Block randomly selected a sample of 320 tax returns submitted to the IRS from tax year 1995 and 180 tax returns submitted to the IRS from tax year 2005. He classified the returns as "Error" or "No Error" and recorded his findings in Excel. Can H&R Block prove that the difference in the proportion of tax returns submitted to the IRS with errors has decreased over this 10-year period at a=0.05? State the hypothesis in terms of 2005 - 1995. Use the correct excel output above to answer the following question. Find the test statistic. Question 7 8.33 pts W PS 7 ple COUN
Transcribed Image Text:Canvas ←→ X O p-value (Two Tail) D H&R Block believes the proportion of tax returns submitted to the IRS with errors has increased over the years. So, an auditor for H&R Block randomly selected a sample of 320 tax returns submitted to the IRS from tax year 1995 and 180 tax returns submitted to the IRS from tax year 2005. He classified the returns as "Error" or "No Error" and recorded his findings in Excel. Can H&R Block prove that the difference in the proportion of tax returns submitted to the IRS with errors has decreased over this 10-year period at a=0.05? State the hypothesis in terms of 2005 - 1995. Use the correct excel output above to answer the following question. Find the test statistic. Question 7 8.33 pts W PS 7 ple COUN
Canvas D Question 6 8.33 pts 2005 1995 Sample Size 180 320 Count for Response Sample Proportion 0.1500 0.2500 Confidence Interval (in terms of 2005 - 1995) Confidence Coefficient 0.95 Lower Limit -0.1705 Upper Limit -0.0295 Hypothesis Test (in terms of 2005 - 1995) W Hypothesized Value 0 Pooled Sample Proportion Test Statistic p-value (Lower Tail) 0.0044 n-value (Unner Tail) H B COUN
Transcribed Image Text:Canvas D Question 6 8.33 pts 2005 1995 Sample Size 180 320 Count for Response Sample Proportion 0.1500 0.2500 Confidence Interval (in terms of 2005 - 1995) Confidence Coefficient 0.95 Lower Limit -0.1705 Upper Limit -0.0295 Hypothesis Test (in terms of 2005 - 1995) W Hypothesized Value 0 Pooled Sample Proportion Test Statistic p-value (Lower Tail) 0.0044 n-value (Unner Tail) H B COUN
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