Identify which of the following sentences is grammatically ...

[kshipps]

Identify which of the following sentences is grammatically correct.
 
  a. The affect of alcohol on driving performance was studied.
  b. Alcohol significantly effected driving performance.
  c. Alcohol had a significant effect on driving performance.
  d. Based on the results, a change in the alcohol policy has been affected.

Question 2

Post hoc tests are used to:
 
  a. determine whether an F-ratio is significant.
  b. determine whether 2 needs to be computed.
  c. make all pairwise comparisons between group means.
  d. all of the alternatives are correct.

[stallen]

Answer to Question 1

c

Answer to Question 2

c

[kshipps]

Thanks for the timely response, appreciate it

[bigcheese9]

Excellent