1. A researcher is comparing scores from two treatment groups
using independent samples t test. Use...
1. A researcher is comparing scores from two treatment groups
using independent samples t test. Use a Hartley’s
F-max test to examine this assumption (each group has 6
participants, s2 in group 1 is 20, and s2 in
group 2 is 15, set alpha level at .05). Also, how should this
researcher estimate the standard error in the independent samples
t test?
HW 6: z-test, t-test for independent samples, t-test for related
samples, 1-way ANOVA
Researchers wanted to...
HW 6: z-test, t-test for independent samples, t-test for related
samples, 1-way ANOVA
Researchers wanted to explore different treatment methods to
effect memory skills in high school freshmen. Subjects were given a
memory test (under multiple conditions) these were the results:
Group 1
10, 8, 9, 11,
8, 9, 7, 6,
9, 8
Group 2
12, 10,
11, 9, 13, 8, 9, 12, 11, 11
Group 3
10, 9, 10, 9, 11,
8, 7, 9, 10, 11...
A researcher is interested in comparing two medications in
order to see which contributes to the...
A researcher is interested in comparing two medications in
order to see which contributes to the greatest decrease in symptoms
as measured by an instrument on a scale of 0-100. The researcher
recruits three groups of participants, one who receive medication
A, one group of participants who receive medication B, and a
control group who receives a placebo.
A. What type of study design is this (descriptive,
correlational, or experimental)?
B. What would be the appropriate statistical analysis to use...
If I want to compare the performance of a particular group to an
established, accepted average...
If I want to compare the performance of a particular group to an
established, accepted average but information about the population
standard deviation is not available. I should
Group of answer choices
conclude this cannot be done.
conduct a one-sample t-test.
conduct a one-sample z-test.
conduct a correlated t-test.
Why, in some cases, is a measure of association needed in
addition to a p-value for a statistical test?
Group of answer choices
The p-value only specifies the reliability of the...
What statistical analysis type would you use for the following
data (2 sampled unpaired t test,...
What statistical analysis type would you use for the following
data (2 sampled unpaired t test, 1 sample z test, logistic
regression, etc).
Do an analysis of the multitasking activity from the ClassData
sheet: comparing the time to type or write abcd…z and 123…26 to the
time for 1a2b3c…26z.