An Eight-Cylinder Automobile Engine Has Two Misfiring Spark Plugs

question 111

Short Answer

An eight-cylinder automobile engine has two misfiring spark plugs. The mechanic removes all four plugs from one side of the engine.
What is the probability the two misfiring spark plugs are among those removed?
______________
What is the mean number of misfiring spark plugs?
______________
What is the variance of the number of misfiring spark plugs?
______________

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Definitions:

Organic Compound

Chemical compounds that contain carbon and hydrogen, often containing other elements like nitrogen, oxygen, sulfur, and phosphorus, essential to life.

Reaction Structure

The graphical representation of the molecular arrangement and bonds between atoms before and after a chemical reaction.

Organic Product

A compound primarily made of carbon atoms obtained as a result of an organic reaction.

Reaction Structure

The arrangement and connectivity of atoms within the products and reactants of a chemical reaction.