There Are 25 Students in a Sixth-Grade Class Find the Probability That a Randomly-Selected Student Has a Runny

question 40

Multiple Choice

There are 25 students in a sixth-grade class. On a cold winter day in February, many of the students had runny noses and sore throats. After examining each student, the school nurse constructed the following table:

$\begin{array}{lcc} & \text { Sore throat } & \text { No sore throat } \\\text { Runny nose } & 5 & 4 \\\text { No runny nose } & 6 & 10\end{array}$

Find the probability that a randomly-selected student has a runny nose.

• A) 0.64
• B) 0.36
• C) 0.20
• D) 1.25

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Definitions:

Cell-Mediated Immunity

The aspect of the immune response that involves the activation of certain immune cells to fight off pathogens, rather than the production of antibodies.

B Cell

A type of lymphocyte involved in the immune response by producing antibodies to neutralize pathogenic threats.

Antibodies

Proteins produced by the immune system that recognize and neutralize foreign objects like bacteria and viruses.

Effector T Cells

A subset of T cells that actively respond to a previously encountered antigen, playing a crucial role in the immune response by attacking infected cells.