Question

Suppose we first take a survey poll of size 200. We find the percentage of those who support President Trump’s border wall is 45% and those who support President Trump’s fixing of the country’s infrastructure is 55%. Compute 95% confidence intervals for each. Using these confidence intervals can we say support for fixing the nation’s infrastructure has greater support than for building the wall? Explain your answer. Please answer these in exactly this order.

1. Confidence interval for building the wall (n=200) Critical value Z = 1.96

2. Confidence interval for fixing infrastructure (n=200) Z = 1.96

3. Answer about whether fixing infrastructure has greater support (n=200) Z=1.96

Answer 1