In a Study of Low Tar Cigarettes, Five Cigarettes from Each

Multiple Choice

In a study of low tar cigarettes, five cigarettes from each of three brands were tested to see if the mean amount of tar per cigarette differs among the brands. i. The F critical value for alpha = 0.05 is 3.74.
ii. If F calculated is 4.75, the decision if $\alpha$ = 0.05 is to reject H₀.
iii. If the calculated F is 4.74, the decision if $\alpha$ = 0.01 is to reject H₀.

A) (i) , (ii) , and (iii) are all correct statements.
B) (i) and (ii) are correct statements but not (iii) .
C) (ii) is a correct statement but not (i) or (iii) .
D) (ii) and (iii) are correct statements but not (i) .
E) (i) , (ii) , and (iii) are all false statements.