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A researcher wishes to estimate theproportion of X-ray machines that malfunction. A random sample of 200machines is taken, and 54of the machines in the sample

A researcher wishes to estimate theproportion of X-ray machines that malfunction. Arandom sampleof 200machines is taken, and 54of the machines in the sample malfunction. Based upon this, compute a 90%confidence intervalfor the proportion of all X-ray machines that malfunction. Then complete the table below.

Carry your intermediate computations to at least three decimal places. Round your answers to two decimal places.

(If necessary, consult alist of formulas.)

What is the lower limit of the90%confidence interval?

What is the upper limit of the90%confidence interval?

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