## Construct a 90% confidence interval of the population proportion using the given information. X= 175 n= 250

Question

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## Answers ( )

Answer:The 90% confidence interval of the population proportion is (0.6523, 0.7477).

Step-by-step explanation:In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following

confidence interval of proportions.In whichz is the zscore that has a pvalue of .

For this problem, we have that:90% confidence levelSo , z is the value of Z that has a pvalue of , so .

The lower limit of this interval is:The upper limit of this interval is:The 90% confidence interval of the population proportion is (0.6523, 0.7477).