Respuesta :
Answer:
Step-by-step explanation:
Hello!
A systematic sample is a sampling type where, the population units are listed in a certain order, the first unit is randomly chosen from the first k number of units and then the subsequent units are selected in intervals of k. To calculate k, in case you know the population size, you have to divide the population size by the sample size (usually established based on previous information. Remember k is always a whole number.
a) k= pob/n= 4247/40= 106.175 ≅ 106
b) From the 106 individuals you have to randomly select the first unit. Then starting from it the next 39 individuals surveyed will be the +k
Using a random number calculator I've chosen the first individual to be surveyed as number 57 after that you have to add k= 106 to know wich are the next individuals to be sampled:
1) 57 Â Â Â Â Â Â Â Â Â Â Â Â Â 11) 1117 Â Â Â Â 21) 2177 Â Â Â 31) 3237
2) 57 + 106= 163 Â Â Â 12) 1223 Â Â Â 22) 2283 Â Â 32) 3343
3) 269 Â Â Â Â Â Â Â Â Â Â Â 13) 1329 Â Â Â 23) 2389 Â Â 33) 3449
4) 375 Â Â Â Â Â Â Â Â Â Â Â 14) 1435 Â Â Â 24) 2495 Â Â 34) 3555
5) 481 Â Â Â Â Â Â Â Â Â Â Â Â 15) 1541 Â Â Â 25) 2601 Â Â 35) 3661
6) 587 Â Â Â Â Â Â Â Â Â Â Â 16) 1647 Â Â Â 26) 2707 Â Â 36) 3767
7) 693 Â Â Â Â Â Â Â Â Â Â Â 17) 1753 Â Â Â 27) 2813 Â Â Â 37) 3873
8) 799 Â Â Â Â Â Â Â Â Â Â Â 18) 1859 Â Â Â 28) 2919 Â Â 38) 3979
9) 905 Â Â Â Â Â Â Â Â Â Â Â 19) 1965 Â Â Â 29) 3025 Â Â 39) 4085
10) 1011 Â Â Â Â Â Â Â Â Â Â Â 20) 2071 Â Â Â 30) 3131 Â Â Â 40) 4191
I hope it helps!