Problem 2: (5 Points) Changed this question Data are provided to you on pizza delivery times (in minutes) for 2 different classications of stores: local and chain stores. The goal here is to determine whether there is a signicant difference in the mean delivery time between the store classifications. Using software: a. Generate summary statistics (central tendency and variability measures) for the two samples and briey summarize what they say. h. Conduct a test of significance for the difference between the mean delivery times of local and chain stores and (show the results) interpret the results. c. Construct a 95% confidence interval of the difference between the two population mean delivery times and interpret it. (1. Finally, are there any other factors, besides the way the store is classified, that could possibly inuence delivery times (identify at least 2)? Include a brief explanation of each