The following scatterplot shows Internet Usage and PC adoption (per 100 inhabitants) for a sample of 15 countries. 
a. Describe the association between Internet usage and PC adoption.
b. Do these data satisfy the conditions for computing a correlation coefficient? Explain.
c. Estimate the correlation.
Definitions:
Mediastinum
An area between the lungs that contains the heart, aorta, esophagus, trachea, and thymus.
Surgical Puncture
A medical procedure involving the insertion of a needle to remove fluid for diagnostic purposes or relieve pressure.
Chest Wall
The structures that enclose the chest cavity, including the rib cage, muscles, and skin, providing protection and support.
Fluid
A substance that flows freely, such as a liquid or gas, adjusting its shape to fit its container.
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