I want a quick solution, please

Question 28 Not yet answered Marked out of 1.00 P Flag question What is the range of given data series? 1094 1086 1025 1036 1058 1045 1095 1091 1093 1092 1065 1009 1010 1035 1085 1072 1011 1068 O a. 84 O b. 85 O c. 86 O d. 87 Question 29 Not yet answered Marked out of 1.00 Flag question In which of the following cases systematic sampling technique can be used? O a. When every sample has a chance selection ob. When there are two different groups available c. When partial list of total population is available O d. When complete list of population is available Question 30 Not yet answered Marked out of 1,00 P. Flag question In systematic sampling technique formula, which one of the following does the 'N' stand for? a. Size of population O b. Sample interval O c. Sample size d. Sampling method