posted by Steve .
One study found that passengers flying on Boeing-747s preferred them to L-1011s, while passengers flying on L-1011s preferred them to Boeing-747s. This is an example of:
A. random sampling error.
B. social desirability bias.
C. administration error – sample selection error.
D. response bias.
I'm stuck on this one because it seems B and D could be the right answer. Does this automatically eliminate both from the choices?