Consider the output analysis method of non overlapping batch means. Assuming that you have a sufficiently large batch size, it can be shown that when the number of batches b is even, the expected width of the 90% two-sided confidence interval for / is proportional to 40.05,0-1 2 Vb-I Using the above equation, determine which of the following values of b gives the smallest expected width. O a. b=2 O b. b=4 O c. b=6