Question

Being timed so please be fast

Aeronautical researchers have developed three different processes to pack a parachute. They want to compare the different processes in terms of time to deploy and reliability. There are 1,200 objects that they can drop with a parachute from a plane. Using a table of random digits, the researchers will randomly place the 1,200 items into three equally sized treatment groups suitable for comparison.

How should the items be labeled to select the process groups using a table of random digits?

A 1–3
B 1–1200
C 0000–1200
D 0000–1199

Answer 1

The items should be labeled "D. 0000–1199" for a fair and equal selection process using a table of random digits.

Step-by-step explanation:

To select the process groups using a table of random digits for the 1,200 objects, the items should be labeled in a way that allows for an equal and random chance of selection for each group. Since there are 1,200 items and three groups, this means each group should have 400 items. To use a table of random digits effectively, we should label the items such that each label is of equal length and covers the full range of items without overlap or gaps.

The best labeling would be "D. 0000–1199", which offers a unique identification for each item (from 0000 to 1199), while also having a number format consistent in length for easy use with the table of random digits. This option ensures that every item has an equal chance of being selected, and since the labels are of the same length, the random digits table can be applied directly without confusion or additional rules.

Answer 2

0000–1199

Step-by-step explanation:

Edge 2020/2021