1. Multiple Choice The figure below shows the daily number of COVID-19 cases reported to the Robert Koch Institute (RKI) (gray line) as well as the 7-day case counts (each divided by 7) also reported by the RKI as a black line. 30000 Neue Fälle -7-Tage-Fallzahlen (/7) 20000 10000 0 Feb. 20 Apr. 20 Jun. 20 Aug. 20 Okt. 20 Dez. 20 Feb.21 Source: RKI; Own calculation. New Cases (Neue Fälle) and 7-day case counts (7-Tage-Fallzahlen) Which statement is not true about the time series shown. a) The time series New Cases has a weekday effect that is not evident in the time series 7-Day Case Numbers. b) The calculation of 7-day case counts is the application of a moving average over the New Cases.. c) The black line was calculated using the HP filter. d) The black line does not result from the calculation of weekly growth rates. …...

Management and a labor union are bargaining over how much of a $50 surplus to give to the union. The $50 is divisible up to one cent. The players have one shot to reach an agreement. Management has the ability to announce what it wants first, and then the labor union can accept or reject the offer. Both players get zero if the total amounts asked for exceed $50. Which of the following is a Nash equilibrium? Management requests $25 and the labor union accepts $10. Management requests $35 and the labor union accepts $10. Management requests $20 and the labor union accepts $20. Management requests $50 and the labor union accepts $0.

2. a. A product consists of three subassemblies which are connected in series. The first subassembly consists of components A and B, which are connected in parallel. In the second subassembly, components C and D are connected in series. The third subassembly has only component E. The reliabilities of the components are given in the following table. Component D E A C B Reliability 0.92 0.96 0.95 0.92 0.98 Find the reliability of the product.

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et-1 3. Given that lim = [+27] [h(t)]], use the Rules of Limits and 3 28 7+2tet-2t-7et] differentiation (for reducing the expression) to evaluate lim{[h(t)][2t — }]}.

a b and c please

24. Which of the following statements is FALSE? (A) The Pfizer, Moderna, AstraZeneca and J&J vaccines do not reduce the spread of COVID-19. (B) COVID-19 primarily causes deaths and hospitalizations among the elderly and those with pre-existing conditions such as obesity. (C) Klaus Schwab started the World Economic Forum. (D) It is impossible to get COVID-19 from an asymptomatic carrier. 25. Why do lockdowns comprise a bad method to deal with COVID-19? (A) They cause harms from other health issues, such as suicides, drug overdoses, and missed cancer screenings. (B) Lockdowns operationalize the beta male within each individual, hence channeling a simp from within the chasms of the soy boy realm. (C) Lockdowns lead to starvation in developing countries, hence causing more deaths than COVID itself. (D) Both A and C. The next three questions involve the following situation. Consider a closed economy in which C = $345 billion, G = $350 billion, Y = $1 trillion, and T = $100 billion. 26. What…

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