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
tatyana61 [14]
2 years ago
11

Researchers conducted an experiment to identify the effects of three different hand sanitizers on the growth of bacteria. The re

searchers grew one type of bacteria in twenty-four identical covered petri dishes. Then, they opened eighteen petri dishes and applied the three hand sanitizers to six petri dishes each. They left the remaining six petri dishes closed as a control group. When the researchers measured the growth of bacteria two days later, the six dishes that had no hand sanitizer showed the least amount of bacterial growth. The researchers concluded that not using any hand sanitizer would lead to the least bacterial growth.
Which statement best explains why the researchers’ conclusion was not justified?
A. The experiment tested too many variables.
B. The control group was not treated the same as the experimental group.
C. The sample size of twenty-four petri dishes is not large enough.
D. The single type of bacteria is not adequate to make any conclusions.
Physics
1 answer:
jek_recluse [69]2 years ago
5 0
The best and most correct answer among the choices provided by your question is the second choice or letter B.

The researchers’ conclusion was not justified because t<span>he control group was not treated the same as the experimental group.</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
You might be interested in
An organism has ____ copies of each gene.
Thepotemich [5.8K]

Answer:

4

Explanation:

6 0
2 years ago
Uranium 235 can be split if it is hit by:
Lady bird [3.3K]
Your Answer Is: Neutron.

I Hope This Helps !!!!!!
6 0
3 years ago
In a summer storm, the wind is blowing at a velocity of 8 m/s north. Suddenly in 3 seconds, the winds velocity is 23 m/s north.
cricket20 [7]

Answer:a=v-u/t

=23-8/3

=5m/s hope you got your answer

Explanation:

8 0
3 years ago
Which action is mostly likely to make the team on the left win
Lady bird [3.3K]
D. adding one student to the team on the left
7 0
2 years ago
State characteristics of the images formed by pin - hole camera​
Leokris [45]

Answer:

Real image

Explanation:

The picture is real, but it is reversed and tiny. An picture generated by a pinhole camera has certain features. As compared item, the image created by a pinhole camera is normally pretty small and looks reversed both on the vertically and horizontally axis.

8 0
3 years ago
Other questions:
  • Which of the following is most like an indicator of a chemical change
    15·1 answer
  • Which of the following are likely to form a covalent bond?
    15·2 answers
  • Describe the relationship between air time and range.
    14·1 answer
  • More pts first 2 so hurry up
    5·2 answers
  • A student measures the time it takes for two reactions to be completed reaction eight is completed and 57 seconds and reaction b
    10·1 answer
  • Exercice 1
    7·1 answer
  • When researchers replicate a study, they are seeking to __________.
    11·1 answer
  • 2 Magnetism comes from the word
    13·1 answer
  • Question in attachment​
    8·1 answer
  • An fm radio station broadcasts at a frequency of 101. 3 mhz. What is the wavelength?.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!