1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
gladu [14]
2 years ago
6

Aeronautical researchers have developed three different processes to pack a parachute. They want to compare the different proces

ses 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.
Which design is the most appropriate for this experiment?

Randomly number each item with 1, 2, or 3. Assign the items labeled 1 to the process 1 group, assign the items labeled 2 to the process 2 group, and assign the items labeled 3 to the process 3 group.
Number each item from 1 to 1,200. Reading from left to right from a table of random digits, identify 800 unique numbers from 1 to 1,200. Assign the items with labels in the first 400 numbers to the process 1 group. Assign the items with labels in the second 400 numbers to the process 2 group. Assign the remaining items to the process 3 group.
Number each item from 0000 to 1199. Reading from left to right on a random number table, identify 800 unique four-digit numbers from 0000 to 1199. Assign the items with labels in the first 400 numbers to the process 1 group. Assign the items with labels in the second 400 numbers to the process 2 group. Assign the remaining items to the process 3 group.
Select an item, and identify the first digit reading from left to right on a random number table. If the first digit is a 1, 2, or 3, assign the item to the process 1 group. If the first digit is a 4, 5, or 6, assign the item to the process 2 group. If the first digit is a 7, 8, or 9, assign the item to the process 3 group. If the first digit is a 0, skip that digit and move to the next one to assign the item to a group. Repeat this process for each item.
Chemistry
1 answer:
vovangra [49]2 years ago
3 0

The best design for this experiment is to number the items from 1 to 1,200 and then choose random numbers in the table of random digits (second option).

<h3>How to use a table of random digits?</h3>

These tables are used to randomly assign items or subjects into groups when experimenting. The best way to use these tables are:

  • Give each item or participant a number.
  • Take a lot at the table and choose a number.
  • If this number is the same that the number assigned to an item or participant classify it in the first group.
  • Keep selecting.

Based on this, for this experiment the steps are:

  • Number the items from 1 to 1,200.
  • Identify numvers in the table.
  • Assign the first 400 items to the process 1 group.
  • Repeat the process for the other two groups.

Learn more about experiments in: brainly.com/question/11256472

#SPJ1

You might be interested in
A b c d e f g h i j k l m n o p q r s t u v w x y z
enyata [817]
It’s B. Substitution hope this helps
6 0
2 years ago
Read 2 more answers
Most cars use water to cool their engines. Ethylene glycol, propylene glycol, or methanol may be added to the water, especially
NemiM [27]

Answer:

B

Explanation:

8 0
3 years ago
Enter a range of values for x, 2x+10, 14 ​
PIT_PIT [208]

Answer:

62 degrees and 15.

Explanation:

3 0
3 years ago
If we add a catalyst to the following equation, CO + H2O + heat CO2 + H2, which way will the equilibrium shift?
Igoryamba

Answer:

No effect.

Explanation:

Hello,

In this case, considering the widely studied Le Chatelier's principle, we can realize that the factors affecting equilibrium are concentration, temperature and pressure and volume if the reaction is in gaseous phase and with non-zero change in the number of moles. In such a way, by adding a catalyst to given reaction will have no effect on the equilibrium direction.

Best regards.

7 0
2 years ago
What are the similarities and differences between a camera and a camera and the human eye?
Sunny_sXe [5.5K]
So a camera can zoom in and out and the human eye has peripheral vision
4 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following is an example of kinetic energy? (2 points) Select one: a. chemical energy b. gravitational energy c. nuc
    11·2 answers
  • What is the difference between parent geometry and actual geometry
    8·1 answer
  • How many atoms of chlorine in 13 g of mgcl2
    15·2 answers
  • What are the properties of the aluminum in the can ?
    14·1 answer
  • Which best represents the reaction of calcium and zinc carbonate (znco3) to form calcium carbonate (caco3) and zinc?
    5·2 answers
  • Which items are used to show elevation, relief, and slope on a topographic map? Check all that apply. topographic lines contour
    15·2 answers
  • A 115-g sample of steam at 100 °C is emitted from a volcano. It condenses, cools, and falls as snow at 0.0 °C. How many kilojoul
    9·1 answer
  • Miscible liquids that have different boiling points can be separated by _______.
    12·1 answer
  • What happens as a result of the kinetic energy of the particles in a liquid being comparable with the intermolecular attractions
    11·1 answer
  • Briefly account for the following relative values:
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!