A marketing research firm whishes to compare the prices charged by 2 supermarket chains - Publi's and Wally's. The research form 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 durin a single week. It is reasonable to assume that the samples are independent Weeky Expenses Publi's Average Weekly Expenses of the 100stores Sample Variance $121.16 $3.30 Wally's Average Weekly Expenses of the 100 stores Sample Variance $116.70 $4.21 What is the degrees of freedom for the t distribution. Round down your final answer to the closest integer A marketing research firm whishes to compare the prices charged by 2 supermarket chains - Publi's and Wally's. The research form 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 durin a single week. It is reasonable to assume that the samples are independent Weeky Expenses Publi's Average Weekly Expenses of the 100stores Sample Variance $121.16 $3.30 Wally's Average Weekly Expenses of the 100 stores Sample Variance $116.70 $4.21 What is the degrees of freedom for the t distribution. Round down your final answer to the closest integer