13. Bias is present in each of the following sample designs. In each case, identify the type of bias involved and state whether you think the sample proportion obtained is higher or lower than the true population proportion. (a) A political pollster is seeking information on public attitudes toward mding of pornographic art by the National Endowment for the Arts (NBA). He asks an SRS of mm U.S. adults, \"Rather than support government eensorship of artistic expression, are you in favor of continuing federal funding of artists whose work may he controversial?\" 35% of those surveyed answer \"yes.\