A researcher measures the correlation of the time it take participants to complete two tasks purported to measure the same cognitive skill.Participant times are converted to ranks from fastest to slowest.If = 165 and n = 20,then what is the decision for this correlation test?
A)Retain the null hypothesis.
B)Reject the null hypothesis.
C)There is not enough information to answer this question.

Question

A researcher measures the correlation of the time it take participants to complete two tasks purported to measure the same cognitive skill.Participant times are converted to ranks from fastest to slowest.If  = 165 and n = 20,then what is the decision for this correlation test?
A)Retain the null hypothesis. 
B)Reject the null hypothesis. 
C)There is not enough information to answer this question.

Quizplus · Accepted Answer

Since the question is about measuring the correlation, it is likely that the researcher is conducting a correlation analysis. In this case, the null hypothesis would be that there is no correlation between the time it takes to complete the tasks. If the calculated correlation coefficient is greater than the critical value at the chosen alpha level, then the null hypothesis can be rejected in favor of the alternative hypothesis that there is a statistically significant correlation. Since the p-value or critical value is not provided in the question, we cannot determine the exact decision. However, if the correlation coefficient is large enough to result in a rejection of the null hypothesis, then the decision would be to reject the null hypothesis.

A Researcher Measures the Correlation of the Time It Take