In order to accept the causal hypothesis, A) the null ...

[LaDunn]

In order to accept the causal hypothesis,
 
  A) the null hypothesis must first be accepted.
  B) both the null and the confounding variable hypotheses must be accepted.
  C) both the null and confounding variable hypotheses must be rejected.
  D) only the confounding variable hypotheses need to be rejected.

Question 2

If the null hypothesis has been rejected, we should consider that
 
  A) the causal hypothesis can be accepted.
  B) the causal hypothesis cannot be rejected.
  C) extraneous variables may have affected the study.
  D) extraneous variables do not affect the hypothesis.

[fromAlphatoOmega22]

Answer to Question 1

Answer: C

Answer to Question 2

Answer: C

[LaDunn]

TYSM

[Jossy]

Gracias!