1. In the most recent YouGov survey of 1,500 U.S. Adults Citizens, 39% said they approve of the job the president is doing, 51% disapprove, while 10% are not sure. The current average of approval ratings for the president is 41.6% (calculated by fivethirtyeight.com).

Which of the following is false?

A. The Null Hypothesis that the presidential approval rating is different from the current average can be rejected with 85% confidence

B. The Null Hypothesis that the presidential approval rating is different from the current average can be rejected with 90% confidence

C. The Null Hypothesis that the presidential approval rating is different from the current average can be rejected with 95% confidence

D. The Null Hypothesis that the presidential approval rating is different from the current average can be rejected with 99% confidence

2. Still referring to the YouGov survey, a political pundit claims the president's true approval rating is 37.9%.

Which of the following statements is correct?

A. We can reject the hypothesis that the presidential approval rating is larger or equal than the claimed one with 80% confidence

B. We can reject the hypothesis that the presidential approval rating is larger or equal than the claimed one with 85% confidence

C. We can reject the hypothesis that the presidential approval rating is larger or equal than the claimed one with 90% confidence

D. We can reject the hypothesis that the presidential approval rating is larger or equal than the claimed one with 95% confidence