A Fabella Is a Small Bone in the Knee Found

question 6

Essay

A fabella is a small bone in the knee found in a tendon behind the femur in some species of mammals, including humans. Historically, it has been rare, but recently it has become more common. Probability data for birth year and presence or absence of the bone is presented in the table. Imagine we examined 200 skeletons of individuals born in 1900 and 100 skeletons of individuals born in 2000. Draw a mosaic plot depicting the probabilities of a random individual from our study having or not having a fabella in their skeleton.
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Probability that skeleton will have a fabella.

$\begin{array}{lc}\text { Birth year and } \\\text { fabella status } & \text { Probability } \\\hline 1900, \text { absent } & 0.80 \\1900, \text { present } & 0.20 \\2000 \text {, absent } & 0.60 \\2000, \text { present } & 0.40\end{array}$ ​

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Definitions:

Red Blood Cells

Cells in the blood that carry oxygen from the lungs to the body's tissues and return carbon dioxide from the tissues back to the lungs.

Afebrile

A medical term indicating the absence of fever, where the individual's body temperature is within the normal range.

Fever Breaks

A reduction or return of body temperature to normal after it has been elevated due to illness or infection.

FUO

Stands for Fever of Unknown Origin, referring to a condition where a patient has an elevated temperature for an extended period without an apparent cause.