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9. From the data obtained from the results of a mechanical aptitude test by 20 individuals: The following results were obtained: X-Bar = 72.2; s^2

9. From the data obtained from the results of a mechanical aptitude test by 20 individuals: The following results were obtained: X-Bar = 72.2; s^2 = 13.1158

Calculate the upper limit for a confidence interval on the variance o2 of this population. Use a 99% confidence level.

a) 36,412 b) 16,459 c) 27,98 d) 108,43 e) 32,428

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