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Questions and Answers
What is the purpose of formulating the null and alternative hypotheses in a research study?
What is the purpose of formulating the null and alternative hypotheses in a research study?
- To determine the sample size required for the study
- To analyze the data using statistical methods
- To decide whether there is enough evidence to reject the null hypothesis (correct)
- To prove that there is an association between the two variables in the population
What type of error is quantified by the use of statistics in a research study?
What type of error is quantified by the use of statistics in a research study?
- Sampling error
- Systematic error
- Random error (correct)
- Measurement error
What is the significance level in hypothesis testing?
What is the significance level in hypothesis testing?
- The maximum sample size required for the study
- The minimum evidence required to reject the null hypothesis (correct)
- The probability of accepting the null hypothesis when it is false
- The probability of rejecting the null hypothesis when it is true
What is the assumption made when formulating the null hypothesis?
What is the assumption made when formulating the null hypothesis?
What is the purpose of collecting sample data in a research study?
What is the purpose of collecting sample data in a research study?
What is the focus of hypothesis testing in a research study?
What is the focus of hypothesis testing in a research study?
What is the primary goal of statistical hypothesis testing?
What is the primary goal of statistical hypothesis testing?
What are the two possibilities when assessing an association between two variables?
What are the two possibilities when assessing an association between two variables?
Which of the following is a key aspect of research?
Which of the following is a key aspect of research?
What is the purpose of formulating hypotheses in statistical hypothesis testing?
What is the purpose of formulating hypotheses in statistical hypothesis testing?
What is the relationship between the null and alternative hypothesis?
What is the relationship between the null and alternative hypothesis?
What is the primary concern when assessing associations between variables?
What is the primary concern when assessing associations between variables?
What is the p-value defined as?
What is the p-value defined as?
What happens to the p-value as the strength of the association and the value of the test statistic increase?
What happens to the p-value as the strength of the association and the value of the test statistic increase?
What is the purpose of the significance level in hypothesis testing?
What is the purpose of the significance level in hypothesis testing?
If the p-value is lower than the significance level, what is the typical conclusion?
If the p-value is lower than the significance level, what is the typical conclusion?
What is the typical significance level used in hypothesis testing?
What is the typical significance level used in hypothesis testing?
What does a lower p-value indicate about the association in the sample?
What does a lower p-value indicate about the association in the sample?
What is the assumption made when testing a hypothesis about the population?
What is the assumption made when testing a hypothesis about the population?
What is the primary goal of statistical analysis in hypothesis testing?
What is the primary goal of statistical analysis in hypothesis testing?
What is the main difference between the null and alternative hypotheses?
What is the main difference between the null and alternative hypotheses?
What is the purpose of collecting sample data in a research study?
What is the purpose of collecting sample data in a research study?
What is the consequence of rejecting the null hypothesis?
What is the consequence of rejecting the null hypothesis?
What is the role of statistical analysis in quantifying error in a research study?
What is the role of statistical analysis in quantifying error in a research study?
What is the prerequisite for testing a hypothesis about the population?
What is the prerequisite for testing a hypothesis about the population?
What is the main purpose of calculating the p-value in hypothesis testing?
What is the main purpose of calculating the p-value in hypothesis testing?
If the p-value is 0.01, what is the probability that the observed association is due to chance?
If the p-value is 0.01, what is the probability that the observed association is due to chance?
What is the general rule of thumb when interpreting the p-value in relation to the significance level?
What is the general rule of thumb when interpreting the p-value in relation to the significance level?
What is the relationship between the p-value and the strength of the association?
What is the relationship between the p-value and the strength of the association?
What is the typical significance level used in most research studies?
What is the typical significance level used in most research studies?
What is the purpose of setting a significance level in hypothesis testing?
What is the purpose of setting a significance level in hypothesis testing?
What happens to the p-value as the sample size increases?
What happens to the p-value as the sample size increases?
What is the main purpose of hypothesis testing in a research study?
What is the main purpose of hypothesis testing in a research study?
What is the implication of a p-value of 0.05?
What is the implication of a p-value of 0.05?
What is the primary focus of statistical hypothesis testing?
What is the primary focus of statistical hypothesis testing?
What are the two possibilities when assessing an association between two variables?
What are the two possibilities when assessing an association between two variables?
Why is it extremely important to be able to state with high certainty whether an association exists or not in the source population?
Why is it extremely important to be able to state with high certainty whether an association exists or not in the source population?
What is the role of the null hypothesis in statistical hypothesis testing?
What is the role of the null hypothesis in statistical hypothesis testing?
What is the main goal of formulating the null and alternative hypotheses?
What is the main goal of formulating the null and alternative hypotheses?
What is the primary concern when assessing associations between variables in research?
What is the primary concern when assessing associations between variables in research?
What is the significance of statistical hypothesis testing in research?
What is the significance of statistical hypothesis testing in research?
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