![subject](/tpl/images/cats/mat.png)
Mathematics, 24.04.2020 01:02 timmonskids2681
Indicate the correct test procedure and reasoning. A researcher wishes to determine whether listening to music affects students' performance on memory test. He randomly selects 50 students and has each student perform a memory test once while listening to music and once without listening to music. He obtains the mean and standard deviation of the 50 "with music" scores and obtains the mean and standard deviation of the 50 "without music scores" O
A. Two-sample t-test, since the researcher has two samples. Paired t-test, since there is a "with music" and "without music" score for each person.
B. z-test for each sample, since the researcher has the sample standard deviation.
C. Not enough information given to determine correct type of test.
D. Pooled t-test, since the standard deviation is likely to be the same in both populations
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 14:00
(hurry! ) which expression is equivalent to the following complex fraction?
Answers: 1
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 00:40
M? aoc=96 ? space, m, angle, a, o, c, equals, 96, degree \qquad m \angle boc = 8x - 67^\circm? boc=8x? 67 ? space, m, angle, b, o, c, equals, 8, x, minus, 67, degree \qquad m \angle aob = 9x - 75^\circm? aob=9x? 75 ? space, m, angle, a, o, b, equals, 9, x, minus, 75, degree find m\angle bocm? bocm, angle, b, o, c:
Answers: 2
![question](/tpl/images/cats/mat.png)
You know the right answer?
Indicate the correct test procedure and reasoning. A researcher wishes to determine whether listenin...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 31.03.2021 17:40
![question](/tpl/images/cats/himiya.png)
Chemistry, 31.03.2021 17:40
![question](/tpl/images/cats/mat.png)
Mathematics, 31.03.2021 17:40
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 31.03.2021 17:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 31.03.2021 17:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/geografiya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 31.03.2021 17:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/es.png)
Spanish, 31.03.2021 17:40
![question](/tpl/images/cats/biologiya.png)
Biology, 31.03.2021 17:40
![question](/tpl/images/cats/mat.png)