What Type of Car Is More Popular Among College Students $= .396$

What type of car is more popular among college students, American or foreign? One hundred fifty-nine college students were randomly sampled and each was asked which type of car he or she prefers. A computer package was used to generate the printout below of a 90% confidence intervaln for the proportion of college students who prefer American automobiles.

SAMPLE PROPORTION $= .396$
$\text { SAMPLE SIZE = } 159$

UPPER LIMIT $= .460$
LOWER LIMIT $= .332$

Based on the interval above, do you believe that 31% of all college students prefer American automobiles?

A) No, and we are 100% sure of it.
B) No, and we are 90% confident of it.
C) Yes, and we are 90% confident of it.
D) Yes, and we are 100 %sure of it.