On an Exam on Probability Concepts, Sue Had an Answer $\frac { 13 } { 8 }$

question 12

Essay

On an exam on probability concepts, Sue had an answer of $\frac { 13 } { 8 }$ for one problem. Explain how she knew that this result was incorrect.

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Definitions:

Stain

In microbiology, a solution of a dye or group of dyes that imparts a color to microorganisms.

Spirilla

A genus of Gram-negative bacteria characterized by their spiral shape and movement through liquid.

Diplococci

Bacteria that form in pairs and are known for causing diseases such as pneumonia and gonorrhea.

Pairs

Sets of two things that are used together or are associated with each other.