Question

(02.01 MC)

Hayden, from the blog "Hanging with Hayden," directly sent an email to her readers

age 18 to 21 and asked the survey question, "If you had the chance, would you want

to be president?" Of the 1,200 readers to whom she sent an email, 567 responded,

and 35% of those who responded said no. What does this show? (4 points)

1) No meaningful conclusion is possible without knowing something more about

the characteristics of Hayden's readers.

2) The survey would have been more meaningful if Hayden had picked a

random sample of the readers who responded.

3) The survey would have been more meaningful if Hayden had used a control

group.

2) This was a legitimate sample, drawn randomly from her readers, and is of

adequate size to allow the conclusion that most of Hayden's readers do not

want to be the president.

5) The survey is meaningless because of nonresponse bias.

Answer 1

The survey is meaningless because of nonresponse bias.

Explanation:

The sample who responded (567) is less than half of Hayden's blog readers (1200). So, in this case, the results were really invalidated, because of the great absence of response, and the survey cannot be taken seriously at least statistically speaking.

567---100

x------35

x≈199 people said No

y= 368 said yes