1. Explain why the title for a major OSHA is "Walking and Working Surfaces" instead of simply "Floors". Name 10 different walking and working surfaces.

The title for a major OSHA is "walking and working surfaces" instead of " floors" is because walking and working surfaces includes horizontal and vertical surfaces such as floors, roofs, stairs, ladders, elevated walk ways, and use of falls protection systems. It is not limited to only floors therefore it cannot be titled as "floors".

Explanation:

10 different walking and working surfaces includes

1. Floors

2.stairs

3. Roofs

4. Ladders

5. Ramps

6. Scaffold

7. Elevated walk ways

8. Harness belts

9. Rescue equipment

10. Safety lineyards

The probability that StableCo will file for bankruptcy over the course of 25 years is 9.53%.

Explanation:

We have the probability of StableCo still operates normally in the business in one year is: 100%-0.4% = 99.60%.

So, the cumulative probability of StableCo still operates normally in the business for 25 years: 99.6% ^25 = 90.47%.

=> The probability that StableCo will file for bankruptcy over the course of 25 years  = 100% - the cumulative probability of StableCo still operates normally in the business for 25 years = 100% - 90.47% = 9.53%.

So, the answer is 9.53%.