John Snow, in Snow on Cholera Group of answer choices A. Was the father of modern biostatistics Established postulates for transmission of infectious disease B. Was an English anesthesiologist who used natural experiments C. Argued that the environment was associated with diseases such as malaria D. Was a London surgeon who identified an environmental cause of cancer

Which of the following would a historian most likely study to find data

When we adapt our current understandings to incorporate information we have engaged in?

Pj conducts an experimental study on the effects of soft music during high stakes science testing. he randomly assigns students at the school. in one condition he does not provide music for testing while in the other group he does provide the music. he administers a pretest at the beginning of the year and a posttest at the end of the year. pj’s design is best described as a: a.static group comparisonb. pretest-posttest control group designc.control-group-time-series designd. nonrandomized control-group pretest-posttest design