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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Interest is what it is called
Answer:
A <em><u>prime minister</u></em> is the head of the cabinet and the leader of the ministers in the executive branch of government, often in a parliamentary or semi-presidential system. Under those systems, a prime minister is not the head of state of their respective state nor a monarch; rather the prime minister is the head of government, serving typically under a monarch in a hybrid of aristocratic and democratic government forms or a president in a republican form of government.
<h3><u>Roles of the Prime Minister</u></h3>
the Prime Minister determines the general direction of Government's activities and ensures coordinated and purposeful work of the Cabinet of Ministers. The Prime Minister leads the work of the Cabinet of Ministers and is responsible before the Saeima.