1.	A sample should be ______.
		A.	less than ten in the general population	B.	half the size of the population
		C.	not representative of the general population	D.	representative of the general population
		Hint
	2.	Roberto wants to take a survey on favorite foods. Which sample would give the most appropriate results?
		A.	A poll of 30 customers at a pizza restaurant.
		B.	A random telephone poll of 30 people.
		C.	A poll of 30 customers at a fast food restaurant.
		D.	A poll of 30 customers at a steak house.
		Hint
	3.	The eighth grade class of 225 students is planning an ice cream social. If the director of the ice cream social knows that 7 out of 10 students prefer vanilla, how many students should be expected to eat vanilla ice cream?
		A.	about 68	B.	about 158
		C.	about 113	D.	about 169
		Hint
	4.	To determine if a certain assembly line is producing quality radios, an employee checks every thirtieth radio leaving the assembly line. Describe the sample used by the employee.
		A.	The sample is unbiased because it is a systematic random sample.
		B.	The sample is biased because it is a convenience sample.
		C.	The sample is unbiased because it is a stratified random sample.
		D.	The sample is biased because it is a voluntary response sample.
		Hint
	5.	To determine who the voters will chose for governor, five voters picked at random from each county of the state are surveyed. Describe the sample.
		A.	The sample is unbiased because it is a systematic random sample.
		B.	The sample is unbiased because it is a simple random sample.
		C.	The sample is biased because it is a convenience sample.
		D.	The sample is unbiased because it is a stratified random sample.
		Hint