The test statistics which will be used here is standard deviation.
<h3>What is standard deviation?</h3>
The standard deviation is a statistic that measures the dispersion of a dataset relative to its mean and is calculated as the square root of the variance. The standard deviation is calculated as the square root of variance by determining each data point's deviation relative to the mean.
A volatile stock has a high standard deviation, while the deviation of a stable blue-chip stock is usually rather low.
Thus, Option D is true, as standard deviation is the test statistics which will be used here.
Learn more about standard deviation here,
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B. They loan out and invest the money that has been deposited.
After the revolution the colonies owed a lot of money to the countries that helped them during teh war but were jsut developing so there wasnt enough money in the treasury to pay all the soldiers and countries back
Answer: the industry that most closely approximates the conditions of the oligopoly model is airlines.
Explanation: oligopoly is a market situation made up of small entities which are independent in their working and they do not have any influence on each other. airlines industries and automobiles industries are two well known examples of oligopoly markets.
In oligopoly markets:-
- industry is dominated by small number of sellers sellers are aware of each others action
- decision of one firm effect the decisions of other firms
- they are concentrated less in monopoly more in competitive system
- increasement of interdependence
oligopoly is a market situation in which small number of firms who together have substantial influence over a certain industry or markets.
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