## Answers

Correlation coefficient of Interview Score and Performance Rating, r = 0.4073

Now, for a sample size n = 30, t-score is given by

T = r*sqrt(n−2) / sqrt(1−r^2)

= 2.359

Corresponding p-value,

p = 0.9874 > 0.4073

Hence, the results are not statistically significant, so we should not recommend the structured interview as the validation test data doesn't show a significant correlation between interview score and performance rating.

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