this question is incomplete but I have added The Answer options to your question
a) He does not have a hypothesis.
b) He only has one group. He has not established a comparison
c) He has not measured an outcome.
d) The groups were not equal to begin with.
Answer:
b) He only has one group. He has not established a comparison
Explanation:
A randomized controlled experiment can be defined as an experiment that has two groups which it randomly assigns participants to.
These two groups are:
1.) the experimental group and
2.) The controlled group on whom the study is being performed.
Now Alberti does not have any of these groups we have listed. He performed the testing on the same people before they consumed alcohol and after they consumed alcohol. Therefore this study was not comparative in nature.
Answer:
Explanation:
How are victims affected by crime?
While the short-term effects of crime can be severe, most people don't suffer any long-term harm. Occasionally, people do develop long-term problems, such as depression or anxiety-related illnesses, and a few people have a severe, long-lasting reaction after a crime, known as post-traumatic stress disorder (PTSD).
The cardiovascular system is made up of what two systems:
a) Circulatory system and respiratory system
