Question
Which of the following is a null hypothesis?
The correct answer is
There is no significant difference in the proportion of male and female fashion professionals in the study population.
Understanding Null Hypothesis Identification
A null hypothesis, denoted as H0, is a statistical statement that assumes there is no significant difference or effect between two groups or variables in a population. It represents the default or status quo position that researchers aim to challenge or disprove.
Analyzing the Options
Let's examine each option in the context of a null hypothesis:
- Option 1: "There is a difference in the proportion of male and female fashion professionals in the study population."
- This statement posits that a difference exists, making it an alternative hypothesis (H1 or Ha).
- Option 2: "The greater proportion of females than males are fashion professionals in the study population."
- This is a directional statement asserting a specific type of difference (more females than males). It is also an alternative hypothesis.
- Option 3: "There is no significant difference in the proportion of male and female fashion professionals in the study population."
- This statement explicitly claims the absence of a significant difference. This aligns directly with the definition of a null hypothesis (H0).
- Option 4: "There are twice as many female fashion professionals as male fashion professionals in the study population."
- This proposes a specific, quantifiable difference (a ratio of 2:1). It is an alternative hypothesis.
- Option 5:
- This option is empty and cannot be evaluated.
Conclusion
Based on the definition, the statement asserting "no significant difference" is the null hypothesis. Therefore, Option 3 correctly represents the null hypothesis.
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Important Questions from Hypothesis - Teaching
- Criteria for Hypotheses construction are
A. It should describe one issue only.
B. It should describe many issues.
C. It should specify variables between which the relationship is to be established.
D. It should be specific and precise.
E. It should be empirically testable, whether it is right or wrong.
Choose the correct answer from the options given below: - Which of the following statements about hypothesis are True ?
A. Hypothesis is a proposition that is stated in a testable form
B. It predicts a relationship between two or more variables
C. It is essential to have a hypothesis in a research study
D. Null hypothesis is a hypothesis of no difference
Ε. Hypothesis brings clarity, specificity and focus to a study
Choose the most appropriate answer from the options given below : - Identify the sources of hypothesis formulation.
A. Sampling method used for research
B. Reports of earlier research
C. Beliefs prevailing in the area of selected problem
D. Prior-experience of researcher in the area of selected problem
E. Type of population
Choose the most appropriate answer from the options given below : - Which of the following are the essential characteristics of good research hypothesis?
A. It should be clear and precise.
B. It should be testable.
C. It should be based on ethical consideration.
D. It should be stated in general terms without specifics.
E. It should indicate a relationship between variables.
Choose the correct answer from the options given below: - According to Wimmer and Dominick, a good research hypothesis should meet which of the following criteria?
A. It should contest current knowledge in the area
B. It should follow logical consistency
C. It should be in its most parsimonious form
D. It should be testable
E. It should be compatible with current knowledge in the area
Choose the correct answer from the options given below:
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