Using data from the "Treatment of 5 Critically Ill Patients With COVID-19 With Convalescent Plasma" study published in JAMA March 27, 2020, test whether the body temperature of patients is significantly lower at Day 1 post transfusion versus Just Before Transfusion. Use the data from Table 2 for Body Temperature in degrees Celsius for Day 1 post transfusion and Just Before Transfusion.

Identify the following: a. Individual

b. Variable

c. Population