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
Alenkinab [10]
3 years ago
8

A school district decides to compare a new math textbook with the textbook that has been used for the past few years. Each of th

e fourth graders in one school is randomly assigned to be in one of two classes, one in which a teacher continues using the old book and another in which a new teacher uses the new book. The school administrators compare the average scores of the two classes on a mathematics standardized test at the end of the year to determine which book is better.Which of the following is a potential confound in this study?a. Both classes have children who report that they do not like math.b. The teachers have different amounts of teaching experience.c. The standardized test is graded incorrectly.d. There are different children in fourth grade this year than there were last year.
Social Studies
1 answer:
GarryVolchara [31]3 years ago
4 0

Answer:

B. The teachers have different amounts of teaching experience.

Explanation:

The teachers having different amounts of teaching experience is the only problem that varies systematically along with the textbook version, so it is the only one that could be a confound. The Longer a teacher teaches a particular Course the more vast and learned he/she becomes and the more experience he/she becomes. He will know methods and things to do to ensure that the students understands better. Unlike a teacher that doesn't have much experience. So both of them handling the same course will definitely yield different results.

You might be interested in
What kind of government is considered to be a good government? Write five characteristics of a good government.
rodikova [14]

answer:

thomas jefferson often referred to the term good government. in his opinion, the government ought to be judged by how well it meets its legitimate objectives. for him, a good government was the one that most effectively secures the rights of the people and the rewards of their labor, which promotes their happiness, and also does their will. for instance, he said: "the care of human life and happiness and not their destruction is the only legitimate object of good government."

five characteristics of a good movement

♡ participation.

♡ rule of law.

♡ transparency.

♡ responsiveness

3 0
3 years ago
(ANSWER WORTH 20 POINTS!) Which of the following are examples of civil liberties ? (choose more than one answer)
iogann1982 [59]

<em>Examples of civil liberties include: Freedom of expression. Freedom of speech. Freedom of assembly. </em>

Serving in the Army (e).

Protesting on a buy street (b).

Not incriminating yourself in court (d).

Hope this helped :\

4 0
3 years ago
Someone with an extremely rare psychological disorder would most likely be studied using what method?
Roman55 [17]

Psychopathology is the scientific study of psychic disorders, including efforts to understand their hereditary, physiological, and social causes. It helps to develop distribution schemes (nosology) which can enhance treatment planning and its outcomes.

It helps to comprehend the development of psychiatric illnesses across all stages and the indications of mental disorders which helps to investigate the effective treatments of such rarest disorders.

8 0
3 years ago
Did the labor movement grow stronger or weaker during the 1920s? Give examples to support your answer
masya89 [10]

The labor movement grew stronger during the 1920s and workers began seeking higher wages, shorter hours, and safer working conditions.

8 0
3 years ago
How did Aztec society differ from Inca society?
yanalaym [24]
The Aztecs were not as strong as the Inca. They got defeated in war against other tribes many times. The Aztecs were the youngest out of the other 3 main tribes. The Aztecs' main city is built on an island in a Mexican lake named lake texcoco. For more info visit: www.knowledgenuts.com/2013/10/22/the-difference-between-the-Aztec-maya-inca-and-olmec/
8 0
3 years ago
Read 2 more answers
Other questions:
  • It is during a natural phenomenon such as a thunderstorm that huck uses his most artistic language. discuss huck's feeling about
    13·1 answer
  • Ten-year-old sydney's iq score on the stanford-binet intelligence test was 130. it is likely that her mental age is:
    11·2 answers
  • This rule provides that a person who does not qualify as a holder in due course (HDC) but takes possession of a promissory note
    9·1 answer
  • Ms. Giovanni’s test results suggest that she is dying of ovarian cancer. She tells her family that the lab must have mixed up he
    7·1 answer
  • Select the correct answer.
    10·1 answer
  • Which are effects of the establishment of the European Union? Select all that apply.
    14·1 answer
  • Certain villages in India are very conservative and women are required to wear clothes that completely cover their entire body.
    12·1 answer
  • I need help pls, T or F?
    10·1 answer
  • Describe the differences between an Algonquin wigwam and Mesoamerican temple.
    12·2 answers
  • How many people have survived parachutes not opening?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!