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Suppose that177 out of a random sample of225 letters mailed in the United States were delivered the day after they were mailed. Based on this,

Suppose that177

out of a random sample of225

letters mailed in the United States were delivered the day after they were mailed. Based on this, compute a95

%

confidence interval for theproportion of all letters mailed in the United States that were delivered the day after they were mailed. Then find the lower limit and upper limit of the95

%

confidence interval.

Carry your intermediate computations to at least three decimal places. Round your answers to two decimal places. (If necessary, consult alist of formulas.)

Lower limit:

Upper limit:

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