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A manufacturer of golf clubs wants to determine if its new driver (Club 1) is more consistent than a competitor's driver (Club 2) in the sense that the variability for Club 1 is smaller than for Club 2. A machine hit 13 golf balls with each of the two clubs. The standard deviation for Club 1 was 4.8 and for Club 2 it was 4.7. What is the upper bound on a 95% confidence interval for the ratio of the two population variances?

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