Suppose two separate studies were conducted (in different years) to evaluate whether three types of investment products (Bonds, ETFs, and Stocks) share the same average return. Empirical distributions of returns (in %) are depicted in the charts: - Study 1 on the left. 0 Study 2 on the right. The two studies have exactly the same sample sizes (for all categories, as summarized in table.) -a_ m_ Sampledmabygnup Sanpledatabygmup 10 14 L '. . [5' 'tr' a.) Specify the test hypothesis (for either study). Which test method is used here? b.) Specify the distribution (and degrees of freedom, if needed) used for the above test c.) Comparing the two charts. Which study (left or right) has a smaller p-value? [note: answer this part based on your intuition, not calculation.]