Property Taxes Administrators of the Fire Department Are Concerned About

Property taxes Administrators of the fire department are concerned about the possibility of implementing a new property tax to raise money needed to replace old equipment. They decide to check on public opinion by having a random sample of the city's population.
a. Several plans for choosing the sample are proposed. Write the letter corresponding to the sampling strategy in the blank next to each plan.

A. convenience; B. stratified; C. simple; D. cluster; E. systematic
___i. The city has five property classifications: single family homes, apartments, condominiums,
temporary housing (hotel and campgrounds), and retail property. Randomly select ten residents from each category.
___ii. Each property owner has a 5-digit ID number. Use a random number table to choose forty
numbers.
___iii. At the start of each week, survey every tenth person who arrives at the city park.
___ iv. Randomly select a housing classification (say, apartments) and survey all the people who
live in that property classification.
___ v. Have each firefighter survey 10 of his/her neighbors.

b. Name and briefly describe the kind of bias that might be present if the administration decides that instead of selecting people randomly they'll just…
i. interview people about the new property tax at a fire station open house. ii. ask people who are willing to be taxed to sign a petition.