Need help with these 3 multiple choice questions asap!!! (intro to statistics)

1) Determine whether the given source has the potential to create a bias in a statistical study.

The American Automobile Association(AAA) is anot-for-profit federation of motor clubs that provides automotive and travel services. AAA conducts a survey of its members about their use of public transportation versus private automobiles.

Choose the correct answer below.

A.There does not appear to be a potential to create a bias. The organization is reputable and has many professional and credible members.

B.There does not appear to be a potential to create a bias. The organization would not gain from putting spin on the results.

C.There does appear to be a potential to create a bias. There is an incentive to make the results statistically insignificant.

D.There does appear to be a potential to create a bias. There is an incentive to produce results that are in line with preferring private automobiles

2) A magazine ran a survey about a web site for downloading music. Readers could register their responses on themagazine's web site.

Identify what is wrong.

Choose the correct answer below.

A. The magazine has an interest in the surveyresults, so the source of the survey is questionable.

B. The sample is a voluntary responsesample, so there is a good chance that the results do not reflect the population.

C. The sample is acensus, so there is a good chance that the results do not reflect the population.

D. It is likely that the survey used a loadedquestion, so the results of the survey are not reliable.

3) Which of the following would be considered practicallysignificant?

Choose the correct answer below.

A. In a very largestudy, it was found that Treatment I resulted in93% success while Treatment II resulted in75% success.

B. An average of 1.2 pounds was lost over a 12 month period using a new diet program.

C.1 out of 50 people were not smoking 12 months after completing anon-smoking program.

D. 8 out of 14 births resulted in male children.