Question 2 (Minimum of 200 words) Please read the opinion piece written by Professor N. Gregory Mankiw in the September 9, 2020 issue of the New York Times, entitled, "Pay People to Get Vaccinated". (a) Describe the positive externalities associated with having between 70% an 90% of the U.S population vaccinated against Covid-19, as soon as possible. (Minimum 150 words) (b) Let us assume, that the government decides to take Professor Mankiw's suggestion and offers to pay people to get vaccinated. How would an economist calculate the appropriate amount to pay a person to agree to get the vaccine? What methodology would you as an economist recommend they use? (Minimum 50 words)