Mathematics, 17.07.2020 17:01, mxhx
Eliana wants to estimate the number of out of state visitors at a national park. She surveys 200 visitors and finds that 83 of them are from out of state. Identify the values needed to calculate a confidence interval at the 90% confidence level. Then find the confidence interval.
Answers: 3
, and a confidence level of 
, we have the following confidence interval of proportions.
.
, z is the value of Z that has a pvalue of 
, so 
. 
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Eliana wants to estimate the number of out of state visitors at a national park. She surveys 200 vis...
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