1. **State the problem:** We have a 2x2 payoff matrix for two companies, Paramount and Disney, each choosing between two strategies. We want to find Disney's dominant strategy and the Nash equilibrium.
2. **Recall definitions:**
- A **dominant strategy** is one that yields a higher payoff for a player regardless of the opponent's choice.
- A **Nash equilibrium** is a strategy profile where no player can improve their payoff by unilaterally changing their strategy.
3. **Analyze Disney's payoffs:**
- If Paramount chooses Strategy 1:
- Disney's payoff for Strategy 1 is $75$
- Disney's payoff for Strategy 2 is $25$
- If Paramount chooses Strategy 2:
- Disney's payoff for Strategy 1 is $300$
- Disney's payoff for Strategy 2 is $150$
4. **Check for Disney's dominant strategy:**
- Compare Disney's payoffs for each of Paramount's strategies:
- When Paramount chooses Strategy 1, Disney prefers Strategy 1 ($75 > 25$).
- When Paramount chooses Strategy 2, Disney prefers Strategy 1 ($300 > 150$).
Since Disney prefers Strategy 1 regardless of Paramount's choice, **Disney's dominant strategy is Strategy 1**.
5. **Find Nash equilibrium:**
- Check each cell to see if neither player can improve by changing their strategy alone.
- Cell A (Paramount S1, Disney S1): Payoffs $(75,75)$
- Paramount can switch to Strategy 2 and get $25$ (less than $75$), so no incentive.
- Disney can switch to Strategy 2 and get $25$ (less than $75$), so no incentive.
- So, (S1, S1) is a Nash equilibrium.
- Cell B (Paramount S1, Disney S2): Payoffs $(300,25)$
- Paramount can switch to Strategy 2 and get $150$ (less than $300$), no incentive.
- Disney can switch to Strategy 1 and get $75$ (better than $25$), so Disney would deviate.
- Not a Nash equilibrium.
- Cell C (Paramount S2, Disney S1): Payoffs $(25,300)$
- Paramount can switch to Strategy 1 and get $75$ (better than $25$), so Paramount would deviate.
- Not a Nash equilibrium.
- Cell D (Paramount S2, Disney S2): Payoffs $(150,150)$
- Paramount can switch to Strategy 1 and get $300$ (better than $150$), so Paramount would deviate.
- Not a Nash equilibrium.
6. **Conclusion:**
- Disney's dominant strategy is Strategy 1.
- The only Nash equilibrium is when both choose Strategy 1, with payoffs $(75,75)$.
**Final answers:**
- Disney's dominant strategy: Strategy 1
- Nash equilibrium: (Paramount Strategy 1, Disney Strategy 1) with payoffs $(75,75)$
Disney Dominant Strategy D3339A
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