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IceJOKER [234]
3 years ago
6

Researchers are investigating the effect of ph level in water on the breeding habits of the moon jellyfish. As part of a laborat

ory experiment, they will randomly assign one of three treatments, low ph , medium ph , or high ph , to the water in the tanks that hold the jellyfish.
SAT
1 answer:
storchak [24]3 years ago
5 0

In this experiment randomization tends to minimize the effects of uncontrolled variables, such as water temperature, so that such factors are not confounded with the treatment effects.

In an experiment, variables are carefully controlled in order to ensure the reliability of the results. Usually, treatments are assigned randomly to experimental units. Randomization refers to the assignment of experimental units to groups by chance.

Randomization is important in this experiment because it  tends to minimize the effects of uncontrolled variables, such as water temperature, so that such factors are not confounded with the treatment effects.

Missing parts;

Which of the following is the best reason for the random assignment of a treatment level to an experimental unit?

A. Randomization tends to minimize the effects of uncontrolled variables, such as water temperature, so that such factors are not confounded with the treatment effects.

B. Randomization will make up for improper experimental design, data collection, and analysis.

C. Randomization makes the analysis easier since the data can be entered into the computer in any order.

D. Randomization is required by statistical consultants before they will analyze the experiment.

E. Randomization means that the experiment would not need to be replicated

Learn more: brainly.com/question/14281129

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Which of these is not a characteristic of science?.
Degger [83]

Science is not testable is not a characteristic of science.

The omitted options include :

  • science is a process.
  • science is a body of knowledge.
  • science must follow the scientific method.
  • science is not testable.

<h3>What is a Scientific method? </h3>

A scientific method refers to the step  by step process that   scientists must follow in order to give scientific explanation of a phenomena or invention of an idea that is testable.

The scientific method includes:

  • Observation
  • Constructing  a hypothesis/ testable explanation
  • Conducting experiments to test the hpothesis
  • Formulation of theories based on experiments
  • Conducting further experiments and research
  • Making conclusions/Formulation of laws.
  • Reporting, and evaluating.

Thus, the characteristics of science include:

  • science is a process.
  • science is a body of knowledge.
  • science must follow the scientific method.

Therefore it is wrong to say that science is not testable.

Read more on scientific methods here: brainly.com/question/26174465

6 0
2 years ago
At what age can children ride a bicycle with training wheels?​
Ann [662]

Answer:

Riding a bike is a lot of fun and great exercise for kids. Learning to ride a two-wheeled bicycle without training wheels is also an important milestone. Children usually learn to ride a bike sometime between the ages of 3 and 8, with an average of just over age 5.

Explanation:

4 0
3 years ago
Read 2 more answers
Human skin color varies widely around the world, and children do not always exhibit the exact same coloring as their parents. Ba
Phantasy [73]

Answer:

Probably C, as recessive traits will not appear in phenotype, but two recessives show that phenotype.

7 0
3 years ago
QUESTION 1
OLga [1]
I think the answer would be b
3 0
2 years ago
Which reaction will most likely take place based on the activity series? li &gt; k &gt; ba &gt; ca &gt; na &gt; mn &gt; zn &gt;
Ivenika [448]

The only reaction that will most likely take place based on the activity series is; C: Ba + Na₂CO₃

<h3>Activity Series</h3>

From the activity series given, we can say that during a displacement reaction, the more reactive metal will always displace the lesser reactive metal from a compound.

Let us look at each of the given options;

A) Ag + FeCl₃

From the activity series, Silver(Ag) is less reactive than Iron(Fe) and as such Silver cannot displace iron from its' compound.

B) Zn + CaO

Zinc (Zn) is a less reactive metal than Calcium (Ca), so it cannot cannot displace Calcium from its' compound.

C) Ba + Na₂CO₃

Barium (Ba) is a more reactive metal than Sodium (Na), and therefore Barium will displace sodium from its compound in a displacement reaction.

D) Cr + KNO₃

Chromium (Cr) is a lesser reactive metal than Potassium (K), and it therefore cannot displace Potassium from its compound.

Complete question is;

Which reaction will most likely take place based on the activity series? Li > K Ba > CaNa > Mn > Zn > Cr> Fe> Cd Ni > H > Sb > Cu > Ag > Pd > Hg > Pt

A. Ag + FeCl₃

B. Zn + CaO

C. Ba + Na₂CO₃

D. Cr + KNO₃

Read more about Activity Series at; brainly.com/question/17469010

5 0
2 years ago
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