Question

200 1995 Sample Size Count for Response 340 Confidence Interval (in terms of 2005-1995) Connidence Coetficient Lower Limit Upper Limt 0.95 0.1 Hypothesis Test (in terms of 2005-1995) Hvpothesized Value Test Statistic Lower Tail p-value (Upper Tail) o-value (Two Tail) 0.05 0.0021 2005 199 340 Count for Response ample Proportio 0.150 Contidence Interval (in terms of 2005-1995) Confidence Coefficient Lower Limit Limit 0.1184 esis Test (in terms of 2005 1995 Hypothesized Value Pooled Sample Proportion Test Statistic p-value (Lower Tail) Tail p-value (Two Tail 0.0699 alue H&R Block believes the proportion oftax retums submitted to the IRS with errors has decreased over the years. So, an auditor tor H&R Block randomly selected a sample of 190 tax returns submitted to the IRS from tax year 1995 and 340 tax returns submited to the IRS from tax year 2005. He classitfied the retums 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 1995-2005 Use the excel output above to answer the following question. The decision rule is reject HO if the test statistic is greater than 2.575

Answer 1

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