During every election in a particular? region, pollsters conduct exit polls to help determine which candidate people voted for. During the most recent? election, pollsters incorrectly predicted candidate A the winner over candidate B. When asked how this error could have? happened, the pollsters cited error due to the fact that in some precincts that favored candidate Upper B , interviewers were denied access to voters selected in the sample. In? addition, the method of selecting individuals to be interviewed led to selecting a lower proportion of female ?voters, and candidate B was favored by females. Explain which nonsampling errors led to the incorrect conclusion regarding the election.