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
serious [3.7K]
3 years ago
15

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?
English
1 answer:
Allisa [31]3 years ago
6 0
The research had used 24 petri dishes which were identical from the beginning.

Unfortunately during application of the hand sanitizer to 18 of this dishes (6 for each type of sanitizer) but did not include opening of the other 6 petri dishes which should have provided this 24 dishes similar conditions as they were all exposed to the environment. On list the experiment would be more conclusive if the following conditions were applied

Sanitizer A -  6 petri opened and applied with sanitizer
Sanitizer B -  6 petri opened and applied with sanitizer
Sanitizer C -  6 petri opened and applied with sanitizer
No Sanitizer - 6 petri opened with no applied sanitizer
You might be interested in
B. Choose the correct options. 8x.5=4
slavikrds [6]

Answer:

1. Each

2. Few

3. All

4. Several

5. Was congratulated

6. Will be working

7. Has taken off

8. Had watched

7 0
3 years ago
Which of the following items is a modern descendent of the medieval guilds?
omeli [17]
Since medieval guilds were unions made up of working men, the correct answer here would be 'labor unions'. 
7 0
3 years ago
Which of these sentences should be removed from the passage?
Effectus [21]

Answer:

Sentence 9

Explanation:

The content should be moved up and combined with the content from Sentence 3.

4 0
3 years ago
Read 2 more answers
Read the passage. Ella Fitzgerald, an American jazz singer, became world famous because of the wide range and the richness of he
Charra [1.4K]

What r d questions?

Pls post the questions

Ik the answers cause it came in my exam last year...

3 0
3 years ago
HELP PLEASE
statuscvo [17]

Answer:1. What did you do at the weekend?, 2.How was your weekend?, 3. oh, why was that?, 4. What did you do on Saturday night?

Explanation:pretty easy, just see what makes sense.

4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the definition of poverty
    7·2 answers
  • What types of birds are there?
    11·1 answer
  • Cambria sang in her school’s talent showcase three songs making her grandparents proud.
    12·2 answers
  • Which of the following could be considered a credible argument for getting an extension on school work?
    9·2 answers
  • Strayer says we’re becoming a nation of distracted drivers. He says that when you take your eyes off the road, hands off the ste
    11·1 answer
  • Write a semi formal letter to your father's friend thanking him for the gift he sent to you​
    15·1 answer
  • Direction: Determine and supply the suitable form of the verbs following the structure of zero
    14·1 answer
  • At a popular restaurant, where Lee is the head chef; the following events occurred:________
    9·1 answer
  • The startled waiter looked hard at the customer who had just ordered one rubbery egg and two slices of burnt toast for breakfast
    12·1 answer
  • What is the Verb?<br><br> Violet's braces cut and bruised her lip.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!