Question

lamont designs a survey of town residents in an attempt to predict who will be elected mayor. he chooses his sample of 500 people from the towns 40,000 residents by asking his question to every person leaving the public library on a saturday. which suggestion would most improve lamonts random sample?

lamont should sample only adults.

lamont should sample only registered voters.

lamont should decrease the sample size.

lamont should ask every fifth person.

Explanation:

Lamont's current sample only includes people leaving the public library on a Saturday, which is a biased, non-random group. To improve the randomness and relevance for predicting a mayoral election, the sample should target those eligible to vote. Sampling only adults is not as precise, since not all adults are registered voters. Decreasing sample size reduces accuracy, and asking every fifth person still keeps the biased library population. Targeting registered voters ensures the sample includes those who can actually participate in the election, making the sample more representative and random for the election prediction.

Answer:

B. Lamont should sample only registered voters.