Approximatey, about 50% <span>of american adults has a diagnosable psychological disorder at some point in their life.
The percentage got bigger if it's measured in metropolitan cities such as new york or Washington DC, which are really well known for their high pace and stressful jobs</span>
2.3% is the correct answer.
Thousands of people start smoking cigarettes every day in the Unites States, and about 70% of long term smokers want to quit smoking. However, according to the Centers for Disease Control and Prevention, the likelihood that professor Williamson will have achieved sustained abstinence by the end of the year is only 2.3%.
The cotton gin is a machine that easily separates cotton fibers from their seeds.
Answer: Across subjects multiple-baseline design
Explanation: The single case design involves experiment whereby only one group is used as to make inference in the study, the control group and treatment group aren't distinct. When behavior is measured or observed in two or more participants belonging to a single group by delivering a the same intervention or treatment at different poinf in time. In the scenario above, the smile and eye contact is the treatment being delivered or used on the participants to measure the the level of responsiveness of the participants. After trying the treatment on the first subject, the treatment was so test on the other participants, hence
