Homework 81 and 82

Which is the population?

• an entire deck of cards

• five heart cards

Which is the population?

• the jar

• the ones outside the jar

An airport randomly selects inspects every 8th suitcase that goes through security.

• Unbiased

• Biased

To determine how many students plan to attend the school musical, Maria surveys 100 random people in the hallway.

• Biased

• Unbiased

To determine how many homes in his neighborhood plan to hand out candy on Halloween, Daniel chooses one street at random and surveys each household on that street.

• Biased

• Unbiased

At the end of the year, a math teacher decides to survey his students to determine what they liked best about his class. He uses his first period class as his sample.

• Unbiased

• Biased

To check lightbulbs for defects, 500 random bulbs from a certain production line are checked.

• Unbiased

• Biased

A sample should be

• representative of  only middle school students only

• a very large group

• representative of the population

• representative of people who volunteer

_________ is a sample in which each individual or object in the entire population has an equal chance of being selected.

• Median

• Population

• Random Sample

• Quartile

1.  Carlos wants to know the favorite sport of people at his school so he asks his baseball team. What type of sample would this be?

• Biased

• Unbiased