The range and standard deviation of a distribution

Health and cardio respiratory fitness occurs when the heart is working, at minimum, 50 percent of heart rate reserve. true or false

An _ exposure is a repeated or prolonged exposure(over months or years) that may bring about slowly developing symptoms.

Minor illnesses: a.) decrease the risk of sids b.) increase the risk of sids c.) increase the risk of hospitalization d.) decrease the risk of allergies e.) increase the risk of allergies