Explanation
This question gives example of positive economic analysis: Law of demand, which studies the relationship between the price of a good and the quantity purchased, is an apt example of positive economic analysis. This is because it is based on proven facts, that can be empirically tested and it now forms the basis for important microeconomic theories.
A production possibility frontier/Curve (PPF/PPC) shows the maximum possible output combinations of two goods or services an economy can achieve when all resources are fully and efficiently employed
Positive statements describes the matter of the presence of the subject with proven facts and figures after careful observations that does not contains valued judgement i.e. does and does not for social welfare. Therefore, these statements are not the statement of truth but just describes the consequences of the implementation of theories into various economic situation.
If the production of cricket bat is increased from 3 thousand to 4 thousand, the opportunity cost that economy has to bear will be 20 lakh sarees(50-30 lakh sarees) since it has to be sacrificed in order to produce more of cricket bats with limited resources and technology given.Opportunity cost of production of a commodity refers to the cost which the producer has to sacrifice in terms of the next best alternative use. Therefore, the sacrifice which is made to produce 4 thousand bats from3 thousand to four thousand thousand is 20 lakh sarees.
In a mixed economy, private decisions are intervened by the government due to which all the major economic decisions related to economic development is taken by the government i.e. public sector which includes economic infrastructure, development of health and education etc.
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