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Consider two independent experiments. In the first one, 71 trials had 53 successes. In the second one, 64 trials had 51 successes. Find the critical

Consider two independent experiments. In the first one, 71 trials had 53 successes. In the second one, 64 trials had 51 successes. Find the critical value for a 91% confidence interval for the difference of two proportions. Round to 3 decimal places.

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