The Grades on a Statistics Exam for a Sample of Students

question 44

Multiple Choice

The grades on a statistics exam for a sample of students are as follows: If A + = 90%-100%
A = 80%-89%
B+ = 75%-79%
B = 70%-74%
C+ = 65%-69%
C = 60%-64%
D+ = 55%-59%
D = 50%-54%
F = 0-49%
What is the most common letter grade earned?

• A) A (80%-89%)
• B) B (70%-74%)
• C) C (60%-64%)
• D) D (50%-54%)
• E) F (0-49%)

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Definitions:

Diastole

The phase of the heartbeat when the heart muscle relaxes and allows the chambers to fill with blood.

Right Ventricle

The chamber of the heart responsible for pumping deoxygenated blood to the lungs for gas exchange.

Cardiac Muscle Cells

Specialized muscle cells found in the heart that contract rhythmically to pump blood throughout the body.

Skeletal Muscle Cells

Long, cylindrical cells that make up skeletal muscles, capable of contraction and responsible for voluntary movements.