(2) Imagine someone is conducting a poll with the goal of estimating support for the Republican can- didate in an upcoming election among all Texas residents. For each statement below, explain what concerns you might have about bias in the results of the survey. (You should assume each part below refers to a different hypothetical survey). (a) The survey is conducted by setting up a table on the UT campus and asking every 10th person who walks by to take the survey. (b) The survey randomly chooses phone numbers from a list of residential land lines (non-cell phones) to contact potential respondents. 1 (c) In an attempt to increase response rates to the survey, people are offered free tickets to a country music concert if they take the survey. (d) After the survey is conducted, you look at the sample and realize that only 52 out of 1000 respondents identified themselves as African American (about 12% of the Texas population is African American).