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. There are 2 degrees of freedom for the numerator.
ii. There are 12 degrees of freedom for the denominator.
iii. If the sum of squares for the brands is 0.07, the mean square for brands is 0.035.
A) (i) , (ii) , and (iii) are all correct statements.
B) (i) and (ii) are correct statements but not (iii) .
C) (i) and (iii) are correct statements but not (ii) .
D) (ii) and (iii) are correct statements but not (i) .
E) (i) , (ii) , and (iii) are all false statements.
Correct Answer:
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