Imagine a poll that found that 55% of U.S. adults believe that the federal government has too much power. And let's say the poll was conducted via telephone interviews on September 6 - 10 among 1,022 U.S. adults and contained a margin of error of 4 percentage points at the 95% confidence level. Question 4 What is the population parameter that the sample result is estimating? the proportion of all U.S. adults who participated in the poll. the proportion of all U.S. adults who believe that the federal government has too much power. the proportion of all U.S. adults who believe that the federal government has enough power