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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I believe the answer is: Hypothalamus.
<span>the hypothalamus in our brain is functioned to produces various type of humans that reguate's our body's activies.
Damages in hypothalamus could caused several biological irregularities, such as unable to feel thirst or hunger, unable to feel pain, feel a certain type of emotion, etc.</span><span />
It collapsed because of cold war and also corruption.
Answer:
d) It outlawed both slavery and involuntary servitude.
