Mathematics, 11.08.2021 22:50 7obadiah

A college chemistry teacher wants to know whether taking a practice exam will help her students score higher on their final exam. She
randomly selects 50 students from among the four sections of
Introductory Chemistry that she teaches. Then she randomly divides
them into two groups of 25 students each. Group A will take a practice
exam, and group B will not take a practice exam. After all 50 students
take their final exam, she will compare their results.
Which of these are the treatments in this experiment?
A. Taking a morning chemistry class and taking an afternoon
chemistry class
B. Having taken high school chemistry and not having taken high
school chemistry
C. Being one of the 50 students selected and not being one of the 50
students selected
D. Taking a practice exam and not taking a practice exam

Answers: 2

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 20:00

Wich statement could be used to explain why the function h(x)= x^3 has an inverse relation that is also a function

Answers: 3

Answer

Mathematics, 21.06.2019 23:00

Eden has a part time job. she is paid ? 7.20 an hour the week she worked 18 and a half hours how much is she paid

Answers: 1

Answer

Mathematics, 22.06.2019 00:40

Atest consists of 10 multiple choice questions, each with 5 possible answers, one of which is correct. to pass the test a student must get 60% or better on the test. if a student randomly guesses, what is the probability that the student will pass the test?

Answers: 2

Answer

Mathematics, 22.06.2019 01:50

Twelve different video games showing substance use were observed and the duration times of game play (in seconds) are listed below. the design of the study justifies the assumption that the sample can be treated as a simple random sample. use the data to construct a 99% confidence interval estimate of μ, the mean duration of game play. 4028 4316 4816 4650 4036 5010 4833 4331 4307

Answers: 1

Answer

You know the right answer?

A college chemistry teacher wants to know whether taking a practice exam will help her students sco...

Questions

Mathematics, 06.10.2019 13:00

Nina knows that the average of the x-intercepts represents the line of symmetry for a quadratic function through the x-axis. which equation represents...