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Select an inequality for the shaded region shown in the figure.
Double Negation (DN)
A rule of equivalence in propositional logic permitting the following substitution: p :: ~~p.
Modus Ponens (MP)
A valid argument form in logic where, if 'P implies Q' is true and 'P' is true, then 'Q' must also be true.
Longitudinal
Relates to research or studies that observe the same subjects over a period of time, often years or decades, to track changes and developments.
Cross-sectional
A study design that analyzes data from a population, or a representative subset, at a specific point in time.
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