9. According to statistical theory, 68% of your measurements of time should fall within the range of and of therefore about 3 of
your 5 measurements should satisfy this condition. How many of your measurements fall within this range? Are your errors random according to this theory?
Yes, this is a random error generating because of statistical constraint. We only have finite number of data points. As per this, if we plot our observation we will get a gaussian (inverse bell ) shaped curve with mean equal to central value.
The road on the hills goes upward with the increasing length of the road.That's why we make a winding roads because it reduces the allover surface inclination in every portion of the road which is suitable for driving the vehicles.