Determine whether the sample is biased or unbiased. Explain.
4. A restaurant would like to evaluate the efficiency of its workers. So observe the workers during the second shift.
5. At the end of the year, a math teacher decides to survey his students to determine what they liked best about his class. He users his first-period class as his sample.
6. An airport randomly inspects every 8'' suitcase that goes through security.
7. Mark would like to determine their exercise habits of students in his school. He surveys people on his frack team.
8. To determine how many students plan to attend the school musical, Kaitlyn surveys 100 random people in the hallway.
9. To track the movement of sharks along the east coast, one shark is chosen at random and tagged.
10. To determine how many homes in his neighborhood plan to hand out candy on Halloween, Jack chooses one street at random and surveys each household on that street.
11. To check lightbulbs for defects, 500 random bulbs from a certain production line are checked.
12. Suppose you would like to determine how many students have a cell phone at your school.
Given an example of a biased sample and an unbiased sample.
