1. Compute sample size needed for the confidence interval of the proportion. a. Calculate the sample size needed for the given margin of error and see if the poll had enough people surveyed. Use the sample size template (found in this module's LiveBinder) to find the sample size needed.

Data:

URL for my below work is: https://www.pollingreport.com/enviro.htm.

My poll question is as following:

Quinnipiac University Poll. Jan. 28-Feb. 1, 2021. N=1,075 adults nationwide. Margin of error 3. "Do you support or oppose the Biden administration re-joining the Paris Agreement, a pact reached among countries around the globe to limit climate change by reducing greenhouse gas emissions?" 1/28 - 2/1/21 Support 63% Oppose 33% Unsureo answer 4%

Confidence Interval for Proportion [Number of Success Unknown} Sample Size Confidence Level Proportion of sample 63.90% 2 - score for the left side of the confidence interval -1.95996 2 - score for the right side of the confidence interval 1.95996 Standard Error of the proportion 0.91413 Lower Limit = proportion - standard error*z -score 9.69114 Upper Limit = proportion + standard error*z -score right side 0.65666 \fSample Size for Proportion Estimate of True Proportion 0.63 Sampling Error 0.04 Confidence Level 95.00% Z Score -1.95996 Calculated Sample Size 560