vas X CO After Before Sample Size 10 10 Sample Mean 3.7000 2.6000 Sample Standard Deviation 1.4944 1.0750 df HP Confidence Interval (in terms of After - Before) Confidence Coefficient 16 0.95 Lower Limit -0.1341 2 Upper Limit 2.3341 Hypothesis Test (in terms of After - Before) Hypothesized Value 0 Test Statistic p-value (Lower Tail) p-value (Upper Tail) p-value (Two Tail) 0.0771 Canvas ← → X ab Esc p-value (Two Tail) H&R Block believes the proportion of tax returns submitted to the IRS with errors has decreased over the years. So, an auditor for H&R Block randomly selected a sample of 190 tax returns submitted to the IRS from tax year 1995 and 340 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 proportion of tax returns submitted to the IRS with errors has decreased over this 10-year period at a=0.005? State the hypothesis in terms of 2005 - 1995. Use the correct excel output above to answer the following question. Find the p-value. Question 7 8.33 pts # m 2 3 Q W E F4 F6 BJ ople F11 F12 Delete $ % & * 4 5 b 7 8 9 0 RTY U P }
vas X CO After Before Sample Size 10 10 Sample Mean 3.7000 2.6000 Sample Standard Deviation 1.4944 1.0750 df HP Confidence Interval (in terms of After - Before) Confidence Coefficient 16 0.95 Lower Limit -0.1341 2 Upper Limit 2.3341 Hypothesis Test (in terms of After - Before) Hypothesized Value 0 Test Statistic p-value (Lower Tail) p-value (Upper Tail) p-value (Two Tail) 0.0771 Canvas ← → X ab Esc p-value (Two Tail) H&R Block believes the proportion of tax returns submitted to the IRS with errors has decreased over the years. So, an auditor for H&R Block randomly selected a sample of 190 tax returns submitted to the IRS from tax year 1995 and 340 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 proportion of tax returns submitted to the IRS with errors has decreased over this 10-year period at a=0.005? State the hypothesis in terms of 2005 - 1995. Use the correct excel output above to answer the following question. Find the p-value. Question 7 8.33 pts # m 2 3 Q W E F4 F6 BJ ople F11 F12 Delete $ % & * 4 5 b 7 8 9 0 RTY U P }
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
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