content area bottom Part 1 a) Does this experiment satisfy the principles of good design? A. Yes, assuming that one of the cells can serve as a control group by virtue of being the "usual" offer. Customers are randomly assigned, and the situation was replicated over many customers. B. No, because there are so few customers chosen. C. There is no control group and no placebo group, which violates the control principle of design. D. No because a good experimental design should only have one factor, and account for any other variables only with blocking or randomization. Part 2 b) Is there an interaction effect? A. Yes, there is a negative interaction between the two factors that causes a smaller response than expected at the treatment that pairs no international discount and unlimited data. B. No, there is no interaction between the two factors. C. Yes, there is a positive interaction between the two factors that causes a larger response than expected at the treatment that pairs discounted international and unlimited data. D. Yes, there is a positive interaction between the two factors that causes a smaller response than expected at the treatment that pairs no international discount and unlimited data. Part 3 c) Interpret the results in managerial terms. A. Discounted international is the preferred offer; however, there is a positive interaction effect such that unlimited data and discounted international is substantially preferred in comparison to th