If the software output for a correlation test displays a computed -value of 0.08, the researcher should reject the null hypothesis assuming a pre-set alpha level of 0.05.
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Research Methods in Psychology - 4th American Edition @ KPU
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When evaluating the results of a correlation test against a pre-set alpha level of 0.05, what is the correct statistical decision if the computed -value is less than or equal to 0.05?
If the computed -value for a correlation test is greater than the pre-set alpha level of 0.05, the researcher should reject the null hypothesis.
A psychologist is evaluating the results of four different Pearson correlation tests using a standard significance level () of 0.05. Match each obtained -value to the correct statistical decision and interpretation.
A researcher is evaluating the results of four separate correlation tests using a standard alpha level of 0.05. Arrange the following obtained -values in order from the result that provides the strongest evidence against the null hypothesis to the result that provides the weakest evidence against the null hypothesis.
A psychologist is designing an automated data-reporting script for a research lab to evaluate the results of multiple correlation tests. To ensure the script correctly identifies statistically significant results using a standard alpha level () of 0.05, which of the following logic frameworks should the researcher construct for the script's decision-making algorithm?
If the software output for a correlation test displays a computed -value of 0.08, the researcher should reject the null hypothesis assuming a pre-set alpha level of 0.05.
A psychologist is investigating the relationship between social support and psychological resilience. Arrange the steps of the statistical decision-making process to correctly reflect how a researcher analyzes a -value to reach a conclusion about a correlation.
A researcher conducting a study on the correlation between social media use and attention span obtains the following computed -values. Match each result to the correct statistical conclusion, assuming a pre-set alpha level of 0.05.
When evaluating the software output of a correlation test against a pre-set alpha level, what is the appropriate statistical decision if the computed -value is greater than 0.05?
A researcher finds a correlation between sleep quality and cognitive performance with a computed -value of 0.035. When evaluating this result using a standard alpha () level of 0.05, the researcher rejects the null hypothesis. However, if the researcher were to evaluate this same result using a more stringent alpha level of 0.01, they would be required to _____ the null hypothesis.
A researcher studying the correlation between job satisfaction and productivity obtains a computed -value of 0.06. If the researcher decides to reject the null hypothesis at a pre-set alpha level of 0.05, this statistical decision is _____.
Explain the decision rules a researcher uses when evaluating a computed -value from a correlation test against a pre-set alpha level of 0.05. In your explanation, specify the two possible outcomes and how each affects the decision regarding the null hypothesis.
Assuming the researcher has set the significance level () at 0.05, what statistical decision should they make regarding the null hypothesis, and what conclusion should they draw about the relationship between physical activity and sleep quality? Justify your decision.
Suppose a researcher studying the correlation between two psychological variables obtains a computed -value of 0.055. Explain why this specific value leads to a different decision about the null hypothesis compared to a computed -value of 0.050, referencing the significance threshold.
When evaluating the statistical significance of a correlation coefficient using software output, what is the correct decision rule for comparing the computed -value against a pre-set alpha () level (typically set at 0.05)?
If a correlation test yields a computed -value of exactly 0.05 and the pre-set alpha level () is 0.05, the researcher should retain the null hypothesis because the -value is not strictly less than the alpha level.
A psychological researcher conducts four separate correlation studies on various behavioral and cognitive factors. Match each study's statistical results with the correct decision and research conclusion regarding the relationship in the population.
A clinical psychologist tests whether there is a correlation between the number of therapy sessions attended and self-reported anxiety scores, obtaining a computed -value of 0.18. Assuming a pre-set alpha level of , arrange the logical steps the researcher must take to analyze this result and avoid making an incorrect scientific claim.
A developmental psychologist correlates screen time and sleep quality in toddlers, obtaining a correlation coefficient with a computed -value of 0.08. With a pre-set alpha level of , the researcher writes in their discussion: 'Our correlation test proved that screen time has absolutely no relationship with sleep quality in the toddler population.' When evaluating this conclusion against standard statistical decision rules, we must determine that the researcher's assertion is statistically ____ (enter 'valid' or 'invalid') because a -value greater than only indicates a failure to find sufficient evidence of a relationship, not proof of no relationship.
In a correlation test, if the computed -value is less than or equal to the pre-set alpha level (), the statistical decision is to ____ the null hypothesis.
A psychological researcher studying the relationship between screen time and sleep quality in teenagers calculates a correlation coefficient and finds a computed -value of 0.03. Assuming the researcher had pre-set the significance level at , which statement best explains the correct statistical decision and its conceptual meaning?
A cognitive psychologist studying the correlation between sleep duration and memory recall scores in older adults obtains a computed -value of 0.03. If the pre-set alpha level is , the correct statistical decision is to reject the null hypothesis because 0.03 represents a small probability.
A psychological researcher conducts four separate correlational studies and drafts conclusions based on their statistical results. Match each researcher's conclusion with the correct methodological or statistical critique of their decision-making logic.
A psychological researcher conducts a correlational study and obtains a computed -value of 0.06. With the alpha level set at , four colleagues draft different interpretations of this result. Evaluate the scientific and statistical validity of each draft. Arrange the interpretations in order from the most statistically sound and justified (top/first) to the least statistically sound and justified (bottom/last).