The diameter of the drill used to make the hoses depends on the hardness of the ground (on the softer ground a wider drill is used). The speed of rotation of the drill depends on the diameter of the drill –thinner drills turn faster.

The biggest drill has a diameter of 101.3mm. This drill is called number 1 and turns at 8 rotations per second. The next drill (number 2) turns at 10 rotations per second and every drill turns 25 % faster than the previous. So number 3 turns 12,5 rotations per second, etc.

What is the speed of the 8^th drill? The 16^th drill?

Let n be the number of any drill, stablish a formula for the speed of the n^th drill.

1. Evaluate using the statistical and numerical findings to determine the equation linking the two variables.
2. Find the errors between two methods your graph,
3. Justify whether the selected statistical and numerical techniques are adopted for this problem is producing the correct answer.

Answer rating: 100% (QA)

A B As per the given information in ... View the full answer