A newspaper conducts a poll online to determine what proportion of voters approve of the proposed tax increase. In order to participate, people need to log onto the newspaper's website. After 3 days, the newspaper reports that 78% of respondents are in favor of the tax
increase. Which of the following is true about the sample proportion obtained from this sample?
A. The sample is blased and overestimates the proportion because of voluntary response sampling.
B. The sample is not biased and the sample proportion should be approximately the same as the actual proportion.
C. The sample is biased and overestimates the proportion because of random sampling.
D. The sample is blased and overestimates the proportion because of convenience sampling.