In the WVS countries as cases dataset, we see that 27% of American respondents had a great deal or quite a lot of trust in major companies. Can we build a confidence interval around this percentage,...

In the WVS countries as cases dataset, we see that 27% of American respondents had a great deal or quite a lot of trust in major companies. Can we build a confidence interval around this percentage, using information we have in the WVS dataset? Why or why not?