Sales 125 137 147 162 136 142 ($) Audit 128 107 130 141 141 108 140 $ At the 0.01 significance level, can she conclude that the mean daily expenses are greater for the sales staff than the audit staff? Apicture Click here for the Excel Data File 1. State the decision rule. (Round your answer to 3 decimal places.) Reject Ho if t> 2. Compute the pooled estimate of the population variance. (Round your answer to 2 decimal places.) Pooled variance 3. Compute the test statistic. (Round your answer to 3 decimal places.) Value of the test statistic 4. State your decision about the null hypothesis