Circle your answers when necessary. Solutions without work or reasoning may not receive credit. This HW is worth 15 points. 1. Are the following samples independent or dependent (paired)? As part of a marketing experiment, a department store regularly mailed discount coupons to 25 of its credit card holders. Their total credit card purchases over the next three months were compared to the credit card purchases over the next three months for 25 credit card holders who were not sent discount coupons. Determine whether the samples are dependent or independent. A) dependent B) independent 2. When the variances of two populations are equal and we are performing a t-test for the difference between two means, we: A) Do not change our calculations based on the equal variances B) Use a pooled estimate for the standard deviation o C) Do not use a pooled estimate for the standard deviation o For the following hypothesis testing questions, you may use either the p-value method or the rejection region method. For full credit, be sure to show: The null and alternative hypotheses . . . The p-value or test statistic/rejection region (depending on method used) The decision (reject HO or fail to reject HO) The interpretation (questions start on next page)