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ESRM 2403 HT Flashcards | StudBud
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ESRM 2403 HT
ESRM 2403 HT
20 terms
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Answers
1
Find the independent(a) and dependent variable(b)
a. The rate of growth of the tomato plant b. Type of light
a. natural light b. type of tomatoes
a. Type of light b. The rate of growth of the tomato plant
a. Type of light b. the time tomato needs to grow
2
Null hypothesis predict no relationship between variables. Alternate hypothesis predicts relationship between variables.
False
True
3
You can infer the independent and dependent variables from a research question
False
True
4
which one refers to alternative hypothesis?
AB
BC
AC
ABC
5
What kind of test should we use when Ho: μa=μband Ha: μa<μb (multiple answer)
Right tail test
Two tail test
One tail test
Left tail test
6
Which table we will use: Do people recall more words after learning a memorization strategy?
All of above
Z table
F table
T table
7
Fill in the blank.
Experimental _____ variables can be directly manipulated by researchers.
Dpendent
Any
Common
Independent
8
A medication trial has a control group and a treatment group that contain different subjects. We should use_
Dependent t test
Paired t test
Independent t test
One sample t test
9
The p-value describes the probability that you would see a t value as large as this one by chance.
False
True
10
Level of significance
(α) can be ____ (multiple)
0.05
0.001
0.01
0.025
11
what is the 5 Steps for Hypothesis Testing(choose the right order)
bdcae
dbcae
dbace
abced
12
When the conclusion is to “fail to reject the null hypothesis”, (multiple choice)
The result is statistically significant
The result is not significant
p > alpha
p < alpha
13
A training program assessment takes pretest and posttest scores from the same group of people. Dependent t test is right
True
False
14
If the groups come from a single population (e.g., measuring before/after an treatment), perform a
dependent
t
test
.
True
False
15
If the observed test statistic falls in the rejection region,we say the results are “statistically significant”.
True
False
16
Find the independent(a) and dependent variable(b)
a. Presence/absence of marijuana use b. frequency of pain
a.Presence/absence of marijuana use b.Frequency/Intensity of pain
a. Frequency/Intensity of pain b. Presence/absence of marijuana use
a. Presence/absence of marijuana use b. frequency of pain
17
If the null hypothesis is rejected, then the observed difference in means is in the hypothesized direction.
False
True
18
When p < alpha,
Fail to reject the null hypothesis, the result is not significant
The conclusion is reject the null hypothesis, the result is not significant
Fail to reject the null hypothesis, the result is significant
The conclusion is to reject the null hypothesis, the result is significant
19
what is the degree of freedom?
equal to sample size
sample size plus one
sample size minus one
1
20
Do students that take the SAT Prep course score higher on the SAT than those that don't?
This is dependent Samples T-test
This is one Samples Z-test
This is paired Samples T-test
This is Independent Samples T-test
