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

question 85

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 14 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.

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Definitions:

Esophagus

A collapsible tube from the pharynx to the stomach, through which pass the food and water the body ingests.

Involuntary Muscles

Muscles that operate without conscious control, responsible for functions such as heartbeats and digestive movements.

Inner Layer

Describes the innermost part or section of something, often referring to materials, substances, or biological structures.