The null hypothesis makes a claim about population parameter. A null hypothesis is a statement about the value of a population parameter. So the correct answer is (a).
An example of a null hypothesis is one that asserts that no statistical significance can be found in a collection of provided observations. A hypothesis is tested using sample data to determine how plausible it is. It is represented as H0 and is occasionally referred to as simply the "null." To determine if a theory regarding markets, investment methods, or economies is correct or wrong, quantitative analysts employ the null hypothesis, often known as the conjecture. The alternate theory contends that there is a distinction.
Therefore correct answer is (a).
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Answer:
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Scientific management of a factory's workforce will make the factories output <span>more productive. Scientific management monitors the movements of each employee i</span><span>n order to make them more efficient.
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The Transatlantic Slave Trade started shortly after the year 1500. The first documented case of slavery dates back to Juan de Córdoba, a Spaniard, who brought one African Slave to the Americas with the permission of his Spanish Crown. The first country to send slaves to the Americas seems to be thus Spain, only a few years after the discovery of America.