Question 11 15 pts According to a survey, the average British household is expected to spend 868 on holiday- related expenses during the Christmas period 2013. This amount covers not only gifts, but also food, beverages, and decorations. Assume the study was based on n = 94 randomly sampled households throughout Great Britain. Assume that the sample standard deviation was 162. Answer the following TWO questions: a) What is the 95% condence interval for the average holiday-related expenses? (5 pts) How many sample standard deviations wide is this condence interval? (5 pts) b) After looking at your analysis, a layman said \"I can calculate the sample average holiday-related expenses very easily, why would you do all the extra math to calculate the condence interval? What additional information do you get?\" How would you answer the layman's question in one sentence? (5 pts) Edit View Insert Format Tools Table 12pt V Paragraph V B I U A v i v T2 v