A random sample of 325 bolts from machine A contained 22 defective bolts, while an independently chosen, random sample of 200 bolts from machine B contained 22 defective bolts. Let på be the proportion of the population of all bolts from machine A that are defective, and let på be the proportion of the population of all bolts from machine B that are defective. Find a 95% confidence interval for P₁-P₂. Then find the lower limit and upper limit of the 95% confidence interval. Carry your intermediate computations to at least three decimal places. Round your responses to at least three decimal places. (If necessary, consult a list of formulas.) Lower limit: ? Upper limit: 80

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