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What is a “null hypothesis” and why is it sometimes considered a better starting point for experimental work than an “alternate hypothesis”?

Question

What is a “null hypothesis” and why is it sometimes considered a better starting point for experimental work than an “alternate hypothesis”?

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A "null hypothesis" is a statistical hypothesis that assumes that there is no significant difference between specified populations, any observed difference being due to sampling or experimental error. It is often symbolized as H0.

The null hypothesis is sometimes considered a better starting point for experimental work than an "alternate hypothesis" for several reasons:

  1. Objectivity: The null hypothesis assumes that any kind of difference or importance you see in your data is due to chance. This means you start your experiment without expecting to find something specific, which helps to prevent bias.

  2. Simplicity: The null hypothesis is generally simpler than the alternative hypothesis, as it involves assumptions of equality or no effect. This makes it easier to disprove, and science often prefers simpler explanations.

  3. Falsifiability: The null hypothesis is designed to be falsifiable using statistical tests. If the data does not support the null hypothesis, it is rejected in favor of the alternative hypothesis. This is a fundamental part of the scientific method.

  4. Burden of Proof: The null hypothesis places the burden of proof on the researcher. It is assumed to be true until evidence indicates otherwise. This encourages rigorous experimental design and analysis.

The "alternate hypothesis" or "research hypothesis", on the other hand, is the hypothesis used in hypothesis testing that is contrary to the null hypothesis. It is usually taken to be that the observations are the result of a real effect (with some amount of chance variation superposed).

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Similar Questions

The null hypothesis is a statement wherein an observed effect is a result of chance and not of treatment.

With inferential statistics, the goal is to reject the null hypothesis. What does this mean? Do we conclude that the alternative hypothesis is correct? Why or why not?

The alternative hypothesis is defined as a hypothesis that a researcher is willing to support if the null hypothesis is rejected.Select one:True False

In cases where you have an existing historical claim or assumption, the null hypothesis often states that it is true. In such cases, the alternative hypothesis challenges the historical claim in an attempt to disprove the same. The following are a few important points to be kept in mind while framing null and alternative hypotheses:The null and alternative hypotheses are perfect opposites of each other. Hence, they should cover the entire range of possibilities that the hypothesised parameter can take.The null hypothesis always has the following signs: ‘=’, ‘≤’ or ‘≥’.The alternative hypothesis always has the following signs: ‘≠’, ‘>’ or ‘<’.In the next video, our faculty, Rahim will walk you through some examples of framing null and alternative hypotheses in different contexts.Question 2/2MandatoryThe Null and Alternative HypothesesWhich of the following can function as a pair of hypotheses?Ho: Average age of employees = 28 years; Ha: Average age of employees < 28 yearsHo: Average age of employees ≠ 33 years; Ha: Average age of employees = 33 yearsHo: Average age of employees ≥ 32 years; Ha: Average age of employees < 27 yearsHo: Average age of employees ≤ 41 years; Ha: Average age of employees > 41 years

A null hypothesis is a statement of the status quo, one of no difference or no effectsSelect one:TrueFalse

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