Identify the sampling plan as either cluster, stratified, or 1-in-k systematic samples. A local reporter interviews every 45th person who enters a newly opened park. cluster stratified O 1-in-k...

3 not sure if I'm right on the 1st part, and don't understand how to get k=

Extracted text: Identify the sampling plan as either cluster, stratified, or 1-in-k systematic samples. A local reporter interviews every 45th person who enters a newly opened park. cluster stratified O 1-in-k systematic If the sampling plan is 1-in-k systematic, identify k. (Enter NONE if the sampling plan is not 1-in-k systematic.) k =