**Identify the population and the sample.**

**1.**

**2. **

**3. **

**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.

**Identify the population and the sample.**

**1.**

**2. **

**3. **

**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.