“Using dplyr functions (i.e., filter, mutate ,select, summarise, group_by etc. ) and “”murder”” dataset (available in dslab R package) and write appropriate R syntax to answer the followings: 

a. Calculate regional total murder excluding OH, AL, and AZ (Hint: filter(! abb %in% x) # here x is the exclusion vector) 
b. Display the regional population and regional murder numbers. 
c. How many states are there in each region? (Hint: n ()) 
d. What is Ohio’s murder rank in the Northern Central Region (Hint: use rank(), row_number()) 
e. How many states have murder number greater than its regional average (Hint: nrow() ) 
f. Display 2 least populated states in each region (Hint: slice_min() ) Use pipe %>% operator for all the queries. 

Just need R Language commands for a,b,c,d,e,f.”

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