A researcher wants to compare the average weight gain of two different types of feed (Feed A and Feed B) for a group of growing pigs. They randomly assign 30 pigs to each feed group and measure their weight gain in kg at the end of 4 weeks. Use the R output on the following page to answer - 

(a) What is a suitable null/alternative hypothesis for the research question: Is there any difference between feed A and feed B in terms of weight gain?

 (b) Describe the location, shape, and spread of each group 

(c) Discuss the assumptions 

(d) How do we interpret the p-value? 

(e) How do we interpret the confidence interval? (f) How do we interpret the sample means?