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You sampled n = 10 individuals from a population. From each individual, you took two measurements, one for variable X and the other for variable

You sampledn = 10individuals from a population. From each individual, you took two measurements, one for variable X and the other for variable Y.

Your want to explore the relationship between X and Y, so you decide to calculate thecorrelation coefficient,r.

From the X and Y measurements, you calculated thefollowing values:

Ex Ey Exy Ex2 Ey2

160.0

81.1

1441.0

2648.1

1109.7

a)Calculate the correlation coefficient,r.

b) Determine whether the correlation coefficientissignificantlydifferentfrom 0.

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