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

question 32

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. 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) All statements are false

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Definitions:

Skeletal Muscle

A type of striated muscle attached to bones, under voluntary control, and responsible for movement of the skeleton.

Epithelial Cells

Cells that line the outer surfaces of organs and blood vessels, as well as the inner surfaces of cavities in many internal organs.

Contraction

The process of muscle cells shortening and generating force, often resulting in the movement of parts of the body.

Skeletal Muscle

A type of striated muscle tissue attached to bones, primarily responsible for initiating and controlling voluntary movement.