An 1868 paper by German physician Carl Wunderlich reported, based on over a million body temperature readings, that healthy-adult body temperatures are approximately Normal with mean a 98.6 degrees Fahrenheit (F) and standard deviation a 0.6'F. This is still the most widely quoted result for human temperature. According to this study, what is the range of body temperatures that can be found in 95% of healthy adults? (We are looking for the middle 95% of the adult population.) 96.8 to 100.4 degrees 97.4 to 99.8 degrees 98 to 99.2 degrees