Please Help

Do the students of Aquinas College want more classes offered at 8 am? A survey is sent to a SRS of 200 students and 34 are returned. From the 34 that are returned, it is found that 19 support having more 8 am classes. What is the most likely source of error?

You want to randomly pick three people from a group of 12 listed below. Use the given random digits to pick the three.Number the people alphabetically. Write the names of the three people who are chosen.

Random Digits: 73671 17150 99022 53791 11406 02078 36071 12125

List of Names:

Abby

Ben

Clara

Deb

Ed

Fritz

Grace

Herb

Izzy

Jack

Kim

Lon