undergrad level stat homework with R coding

rat,sex,diet,weight_g 1,female,control,141.2 2,female,A,138.5 3,female,B,135.5 4,female,control,142.3 5,female,A,149 6,female,B,151 7,female,control,142.1 8,female,A,143.1 9,female,B,144.8 10,female,control,132.2 11,female,A,141.3 12,female,B,146.6 13,female,control,136.7 14,female,A,134.6 15,female,B,140.3 16,male,control,162.2 17,male,A,154.1 18,male,B,164.7 19,male,control,163.1 20,male,A,167.4 21,male,B,169.3 22,male,control,166.3 23,male,A,160.3 24,male,B,171.5 25,male,control,156.4 26,male,A,160 27,male,B,158.9 28,male,control,161.8 29,male,A,161.4 30,male,B,166.6