A Test Score of 48

question 140

Multiple Choice

A test score of 48.4 on a test having a mean of 66 and a standard deviation of 11. Find the z score corresponding to the given value and use the z score to determine whether the value is significant. Consider a score to be
Significant if its z score is less than -2.00 or greater than 2.00. Round the z score to the nearest tenth if necessary.

• A) 1.6; not significant
• B) -1.6; not significant
• C) -17.6; significant
• D) -1.6; significant

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Definitions:

Placenta

An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to the growing baby while removing waste products.

Dendritic Cells

Immune cells that process antigen material and present it on the cell surface to the T cells, functioning as messengers between the innate and adaptive immune systems.

Blood Typing

A method to determine an individual’s blood group, important for safe blood transfusions and understanding disease risk.

Antigens

Substances that trigger an immune response, prompting the production of antibodies by the body.