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13. For the following, find the point estimate for P to two decimal places and then, using this point estimate and the given x and

13. For the following, find the point estimate for P to two decimal places and then, using this point estimate and the given x and n, construct a confidence interval at the requested level.

x = 210, n = 430, confidence level 90%:

a. point estimate: ___________

b. confidence interval: _________

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