The Professor of a Business Statistics Class Wanted to Find

question 68

True/False

The professor of a business statistics class wanted to find out the average amount of time per week her students spent studying for the class. She divided the students into the left, right and center groups according to the location they sat in the class that day. One of these 3 groups was randomly selected and everyone in the group was asked the average amount of time per week he/she spent studying for the class. This is an example of a cluster sample.

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Definitions:

Blood Groups

are categories of blood based on the presence or absence of certain antigens on the surface of red blood cells, important for blood transfusions.

A,B,O,AB

The four main blood groups in the ABO blood group system, each classified by the presence or absence of certain antigens on the surface of red blood cells.

Rh Factor

A protein found on the surface of red blood cells that can cause immune reactions during blood transfusions or pregnancy.

Marker

An identifiable physical or genetic indicator that can be used for tracking or identification purposes.