Indicate whether the statements below are true or false. If false, explain why.

a$)$ A local television news program that asks viewers to call in and give their opinion on an issue typically results in a biased voluntary response sample.

b$)$ Convenience samples are generally not representative of the population.

c$)$ Measurement error is the same as sampling error.

d$)$ A pilot test can be useful for identifying poorly worded questions on a survey.

a$)$ Choose the correct answer below.

A$.$ False; it typically results in an unbiased convenience sample.

B$.$ False; it typically results in a cluster sample that is unbiased.

C$.$ True

D$.$ False; it typically results in a random sample with a nonresponse bias.

b$)$ Choose the correct answer below.

A$.$ False; convenience samples are generally very representative of the populations since they tend to be unbiased.

B$.$ False; convenience samples are only representative of small populations.

C$.$ False; convenience samples are usually representative of the population since those readily available are typically the majority.

D$.$ True