Homework: Ch9 HW One Sample Confidence Intervals Question 23, 9.3.13 Part 1 of 3 HW Score: 75%, 18 of 24 points O Points: O of 1 In a random sample ot 81 audited estate tax returns, it was determined that the mean amount ot additional tax owed was S3442 witn a standard deviation ot S2567. Construct and interpret a 90% confidence interval tor the mean additional amount ot tax owed tor estate tax returns. Click the icon to view the t-distribution table. The lower bound is (Round to the nearest dollar as needed.)