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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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A dilation produces a smaller figure. Which is a possible scale factor? –2 one-third 1 4.
Sedbober [7]

Answer:

we know that

if a dilation produces a smaller figure

then

0< scale factor <1

so

case A) -2------> the scale factor must be a positive number

case B) 1/3----> 0< 1/3 <1---> is a possible scale factor

case C) 1------> this scale factor does not not produce a smaller figure, it produces the same figure

case D) 4----> this scale factor produces a larger figure

the answer is

1/3

Explanation:

please mark branlyist if correct

7 0
3 years ago
Drag each group of primates to where they are distributed on the map today.
kirill115 [55]

North/South America:

New World monkeys inhabit the New World, which includes North and South America.

Africa and Asia:

Prosimians, the earliest of the primates, inhabit regions of Africa and Asia.

Old World monkeys still live in Africa and Asia. Fossil species also lived in Europe.

Apes are Old World primates. They are found today in Africa and Asia.

<h3>What is the group of Primates?</h3>

The primates are;

- New World monkeys

- Prosimians

- Old World monkeys

- Apes

The groups are;

North/South America

Africa and Asia

New World monkeys inhabit the New World, which includes North and South America.

Prosimians, the earliest of the primates, inhabit regions of Africa and Asia. This also applies to Apes and Old monkeys.

Thus;

North/South America:

New World monkeys inhabit the New World, which includes North and South America.

Africa and Asia:

Prosimians, the earliest of the primates, inhabit regions of Africa and Asia.

Old World monkeys still live in Africa and Asia. Fossil species also lived in Europe.

Apes are Old World primates. They are found today in Africa and Asia.

Read more about Primate Groups at; brainly.com/question/11204777

#SPJ1

4 0
2 years ago
All of the following are smart guidelines for the college students to follow for using credit cards except [Apex]
Sloan [31]
I don’t know for sure but I think the answer is probably B.
Having a lot of credit cards isn’t usually a good thing because you eventually have to pay them off.
7 0
3 years ago
You are running a multiple regression analysis by hand. You would like to calculate the sums of squares of the residuals. Which
Scilla [17]
The formula for Sums of squares of the residuals (SSR) is attached below.

Therefore, option B is correct:

B. I would calculate the difference between the observed outcome (Y) and the predicted value of Y (Y_hat), square each one of these differences, and add them up.

8 0
3 years ago
Which fossils are formed by sediments and found in sedimentary rock.
Anastaziya [24]
The answer is petrified fossils
8 0
3 years ago
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