Eliana wants to estimate the number of out of state visitors at a national park. Shesurveys200visitorsand finds that83of them are from out of state.

Identify the values needed to calculatea confidence interval at the90%

confidence level. Then find the confidence interval.

z 0.10- 1.282

z0.05- 1.645

z0.025-1.960

z0.01-2.326

z0.005-2.576

Use the table of commonz -scores above. If necessary, round the final answer to three decimal places.

Provide your answer below:

p=

p =

z =

2

(___, ____)