Hypothesis is a name given to a trial idea, tentative explanation, or working assumption that can be used to further investigation. Which of the following were hypotheses later proven to be true?
a. A vaccine might protect people from death from smallpox.
b. Gravity explains why apples fall from trees.
c. Lightning is simply a big electric spark.
d. All of these choices
Question 2
Induction reasons from evidence about some members of a class in order to draw a conclusion about all members of that class. It is employed in the empirical or scientific method that includes all but one of the following methods given below. Which method is that?
a. Analogical and causal reasoning
b. Investigation and testing
c. Following custom, authorities, and tradition.
d. Personal observation
The steps of the scientific method, also known as hypothesis testing
Operant conditioning, also known as trial-and-error learning.
Much time and effort occurs between the development of a research idea and the statistical analysis
EXAMPLE OF A RANDOMIZED CONTROLLED TRIAL
Older adults working
Adding propane to the air inlet of an engine operating in closed loop with a working oxygen sensor ...