Final answer:
To find out how many watches with defects are expected in one box, multiply 5% (0.05) by 25. The answer is 1.
Step-by-step explanation:
To find out how many watches with defects are expected in one box, we need to calculate 5% of 25.
5% can be written as 0.05 in decimal form. Multiply 0.05 by 25 to get the answer. 0.05 * 25 = 1.
Therefore, one watch with a defect is expected in one box.