14. Opposition to the legal availability of abortion is stronger among the very religious than the nonreligious, and it is also stronger among those with conservative sexual attitudes than those with more permissive attitudes.

a) Draw a inec-variable diagram of how these variables might be related, treating abor- tion attitude as the response vanable. (Note: More than one diagram is plausible.)

b) Explain how you would test your diagram, showing potential sample data that are con- sistent with it.