Identify the type of sampling bias guaranteed to occur in each of the sampling schemes, based on the information provided. Some sampling schemes may incur multiple types of bias. A political poll is conducted by contacting people on landline phones. The pollstersdid not keep track of how many people they contacted who did not respond. A political poll is administered by contacting people on landline phones. The pollsterscontacted 5000 households, and 1255 individuals agreed to speak with the caller. A political poll is conducted by asking the listeners of a radio program to call in. A political poll asks the question, "If you found out that Candidate A did notgraduate from high school, would that change your opinion of how unintelligentCandidate A is?"