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The Student's t distribution is always symmetric and bell-shaped, but its tails lie above the normal.
Dyspnea
Difficult or painful breathing.
Tachypnea
Abnormally rapid breathing, which can be a symptom of various medical conditions or responses to environmental factors.
Hyperpnea
Abnormally deep, rapid breathing.
Eupnea
Normal, unlabored breathing pattern.
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