a-2) Number of observation

a-3) customer proportion spent money on amazon prime b-2) frequency vs bin graph

Question: Amazon Prime is a $119-per-year service that gives the company's customers free two- day shipping and discounted rates on overnight delivery. Prime customers also get other perks. such as free e-books. Table 5.3 shows a portion of the annual expenditures (in $) for 100 Prime customers. Use Excel and R to construct the 95% confidence interval for the average annual expenditures of all Prime customers. Summarize the results. TABLE 5.3 Annual Prime Expenditures (in $) Customer Expenditures 2 ..... 100 1272 1089 1389 Question: --a-1) First create a bin of lower-class width of all classes in excel as shown -