Use the following information for questions 5-6: A recent Harris Poll took a random sample of 2200 American adults and found that 176 of them approve of the work done by Congress. 5. What is the 95% confidence interval for estimating the proportion of all American adults who approve of the work done by Congress? Write interval in percent form, rounded to 1 decimal place. 6. Suppose that a news report states that 10% of all American adults approve of the work done by Congress. Is this statement plausible? Explain.