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In the overall sample of 100 bolts, four were actually found with torques below 40 Nm. (i) Comment on the comparison between this result and

In the overall sample of 100 bolts, four were actually found with torques below 40 Nm. (i) Comment on the comparison between this result and your answer to (a) above. (ii) Use this result to obtain a 90 % two-sided confidence interval for the proportion below 40 Nm

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