Why is it possible for condition means to differ at the end of an ...

[naturalchemist]

Why is it possible for condition means to differ at the end of an experiment even if the independent variable had no effect?
 
  a. a Type II error has occurred
   b. error variance
  c. randomization
  d. a null finding has been obtained
  e. power was low

Question 2

If statistical analyses show that the difference between condition means is larger than would be expected on the basis of error variance alone, a researcher will
 
  a. accept the null hypothesis
   b. reject the null hypothesis
  c. fail to reject the null hypothesis
  d. reject the experimental hypothesis
  e. both a and d

[briezy]

Answer to Question 1

Many thanks to you.

Answer to Question 2

B

[naturalchemist]

Thank you

[briezy]

Happy to help you