Answer:
2.12
Explanation:
PED = % Change in Quantity demanded / % Change in price
✔️Price when quantify demanded was 8:
Substitute Q = 8 into P = 50 - 2Q
Thus:
P = 50 - 2(8)
P = 50 - 16
P = 34
✔️Price when quantify demanded was 12:
Substitute Q = 12 into P = 50 - 2Q
Thus:
P = 50 - 2(12)
P = 50 - 24
P = 26
✔️% change in price = (old price - new price)/old price × 100
Old price = 34
New price = 26
% change in price = (34 - 26)/34 × 100 ≈ 23.53 (2 d.p)
✔️% change in quantity demanded = (old quantity - new quantity)/old quantity × 100
Old quantity = 8
New quantity = 12
% change in quanty demanded = (8-12)/12 × 100 = 50%
✔️ Elasticity (PED) = 50/23.53 = 2.12 (2 d.p)
Answer: a. selecting sample members to study because they possess attributes important to understanding the research topic.
Explanation:
A purposive sampling is a sampling technique in which the researchers rely on their own decision or judgement in choosing the members of the population of the study. This is a non-probability sampling as no random selection is made.
This sampling method needs the researcher must be possessing prior knowledge about the purpose of the study so that the researcher can choose the desired and eligible members for the study.
The possible reasons for the changes observed in the survey of 2002 are:
Killing oneself.
Drug abuse.
Psychosis.
What is a survey?
In this type of study, a group of individuals are the subjects, and a set of questions is used to elicit specific data from them.
Youth risk behavior changed as a result of the high rate of early deaths, many of which might be attributed to occurrences of self-immolation.
As the youth became involved in substance and drug misuse, there was a rise in health issues and quick behavioral changes.
Many others who had no health problems or fatalities as a result of the stress and abuse caused by these relapsed into psychosis, an abnormal mental condition that makes it impossible to distinguish between what is real and what is not.
Therefore, psychosis, self-immolation, and drug misuse are the modifications that the survey from 2002 has found.
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