Please solve

A marketing research firm whishes to compare the prices charged by 2 supermarket chains - Publi's and Wally's . The research firm using a standardized one-week shopping plan (grocery lists, makes identical purchases at 100 of each chain's stores. The stores for each chain are randomly selected, and all purchases are made during a single week. It is reasonable to assume that the samples are independent. Weeky Expenses ols Publi's Average Weekly Expenses of the 100stores $121.41 ning Sample Variance $4.84 s Tips Wally's K Average Weekly Expenses of the 100 stores $115.70 Sample Variance $8.12 At 95% confidence what is the margin of error - Round to 4 decimal places If you can, use up to 2 decimals in your intermediate calculations. DII DD F3 F4 F5 F6 F7 FB F9 F10