Question

A or D? HELP!


A large makeup company plans on launching a new line of makeup involving a series of unusual colors. To get a better idea of what colors they should use, the company sent survey cards to 4,000 women who were randomly selected from telephone books across the country. After the end of the survey, the company had received 3,219 cards. Which of the following correctly describes this sample?


A. This method of sampling is biased.

B. This method of sampling is neither biased nor unbiased.

C. This method of sampling can be considered both biased and unbias

Answer 1

and unbiased.

D. This method of sampling is unbiased.

Answer 2

HELP

Answer 3

D. This method of sampling is unbiased.

Answer 4

because the company just send the card RANDOMLY, so not biased!

Answer 5

The D. option doesn't show in the same place with other, I takes me forever to find it :/

Answer 6

thanks :)

Answer 7

A. This method of sampling is biased.

A random selection from women listed in the telephone book has an element of randomness to it but the women listed in the telephone book are NOT a representative sample of ALL women in the population.

Read about what is perhaps the most famous sampling bias poll in history:
“President” Landon and the 1936 Literary Digest Poll
Were Automobile and Telephone Owners to Blame?

http://ssh.dukejournals.org/content/36/1/23.abstract