Question 1193825
To answer this question, we compare the **F values** for each factor and interaction term to the critical value (\( F_{critical} = 3.26 \)) provided for \( \alpha = 0.05 \), \( \text{d.f.}_{\text{numerator}} = 2 \), and \( \text{d.f.}_{\text{denominator}} = 36 \).

### Step 1: Analyze \( F \)-statistics

1. **Factor A**:
   - \( F_A = 4.89 \)
   - \( F_A > 3.26 \): **Reject the null hypothesis** for Factor A.

2. **Factor B**:
   - \( F_B = 1.51 \)
   - \( F_B < 3.26 \): **Do not reject the null hypothesis** for Factor B.

3. **Interaction A × B**:
   - \( F_{A \times B} = 2.63 \)
   - \( F_{A \times B} < 3.26 \): **Do not reject the null hypothesis** for the interaction term.

### Step 2: Conclusion

- The null hypothesis for **Factor A** is rejected because its \( F \)-statistic is greater than the critical value.
- The null hypotheses for **Factor B** and the **interaction term** are not rejected because their \( F \)-statistics are less than the critical value.

### Final Answer:  
**A. Only the null hypothesis concerning Factor A should be rejected.**