The Doctor Has Been Struggling with Finding Out Why John

question 18

Multiple Choice

The doctor has been struggling with finding out why John has been feeling so poorly lately.For the past month he has been rundown,had a low grade fever and always tired.A test of his blood indicated that he has a bacterial infection.Which of the following explanations best summarizes John's health situation?

• A)John most likely has something wrong with his spleen due to the bacterial infection in his blood.The spleen also is responsible for housing T and B cells which play a role in defending the body.
• B)John most likely has something wrong with his thymus gland due to the bacterial infection in his blood.The thymus gland also is responsible for housing T and B cells which play a role in defending the body.
• C)John most likely has an infection of his tonsils.If the tonsils are infected they will be unable to prevent the infection from spreading throughout his blood stream.
• D)John most likely has something wrong with his spleen due to the bacterial infection in his blooD.The spleen also is responsible for housing macrophages and red blood cells which play a role in defending the body.

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Definitions:

Proportion

A statistical measure that indicates the fraction of the total number of items in a certain category or characteristic.

Two-tail Test

A statistical test that is used to determine if there is a significant difference between a sample and a particular population mean, where the critical region is split between both tails of the distribution.

Population Proportion

A measure that describes the percentage of a specific characteristic in a population.

Z-test

An analysis technique that evaluates the difference in means between two populations with known variances and substantial sample sizes.