12. A poll surveyed 1024 people about global warming. Of those surveyed, 389 said that they thought global warming would pose a serious threat to their way of life in their lifetime.

a) Define p and p for this problem. Which is the one that we will estimate a confidence interval? Which is the one that we know from the survey and what is it?

b) Find a 90% confidence interval for the population proportion of people that think global warming will pose a serious threat to their way of life in their lifetime.

c) From this survey, can we be 90% confident that the majority of people do not think global warming will pose a serious threat to their way of life in their lifetime? Why?