[Step-by-Step] A researcher was interested in finding the relationship between anxiety (X) and performance on a cognitive task (Y). The following summary results
Question: A researcher was interested in finding the relationship between anxiety (X) and performance on a cognitive task (Y). The following summary results were obtained on a sample.
n = 8 ΣXY = 122
Mean of X = 5.75 Mean of Y = 3.75
ΣX 2 = 318 ΣY 2 = 168
- Compute the Pearson correlation coefficient r.
- Find the percentage and the amount of the variance in Y that is accounted for by the correlation between X and Y.
Deliverable: Word Document 
![[Step-by-Step] Using the data of Problem 1](/images/solutions/MC-solution-library-62784.jpg "[Step-by-Step] Using the data of Problem 1 above: Find the regression")
[Step-by-Step] Using the data of Problem 1 above: Find the regression
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Solution: Consider the following scores on two variables X and Y
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Confidence Interval for the Difference Between Means Calculator for Unknown Population Variances - MathCracker.com