Question

Describe a scenario where a researcher could use an F-test for the equality of two variances to answer a research question. Fully describe the scenario and the variables involved and explain the rationale for your answer. Why is that test appropriate to use?

Answer #1

Please write in bold letters and number each
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Lesson Twelve you've seen how to use F-Tests and
Analysis of Variance to answer research questions relevant to those
statistical analysis procedures. Respond to the following to
demonstrate your grasp of these.
1. Describe a scenario where a
researcher could use an F-test for the equality of two
variances to answer a research question. Fully describe the
scenario and the variables involved and explain the rationale for
your...

Assume that a ski lift manager claims that they have a certain
amount of customer flow through the winter months. Like 10 % of the
total ski season customers in October, November 15 % and December30
%, January 25%, February 20%.
Fully describe the variables involved and explain the rationale
for where a researcher could use a Goodness of Fit Test to . Why is
that test appropriate to use?

Describe a scenario where it would be appropriate for a
researcher to do a one-tailed, a paired-sample t-test.

Describe the result lavene test result
below
Independent Samples Test
Levene's Test for Equality of Variances
t-test for Equality of Means
F
Sig.
t
df
Sig. (2-tailed)
Mean Difference
Std. Error Difference
95% Confidence Interval of the Difference
Lower
Upper
Sales
Equal variances assumed
.247
.622
-.074
32
.941
-32.412
437.593
-923.760
858.937
Equal variances not assumed
-.074
31.719
.941
-32.412
437.593
-924.070
859.246

You want to test a hypothesis about equality of two variances.
What test statistic should you use?

Use the following scenario to answer the next three
questions:
A researcher wants to examine whether there is a
relationship between amount of time spent on electronic
devices and attention span (measured in milliseconds).
List the two variables and identify the scale of measurement
for each.
Grading note: total question = 3 pts
(1 pt for listing both variables and 1 pt per each correct scale of
measurement)
Answer:
Which specific statistical test is most appropriate? (2
pts)
Answer:

Describe an imaginary research study where it would be
appropriate to use an independent-measures design that could be
analyzed using a t hypothesis test. What are the two sets of data
to be compared? What are the null & alternative hypotheses?

create an example to which the chi-square test of independence
could be applied. Address the following:
Identify two categorical variables for which a chi-square test
of independence could be conducted.
Describe the categories of each.
Explain why these would be appropriate for this test.
Predict whether or not the chi-square test result would be
significant, and what this would imply about the variables.

Which test determines whether the variances of two sets of
measurements are statistically similar or different?
a. t test
b. G test
c. F test
d. Q test
the answer is C, please explain why and why other answers are
wrong!

Describe, in detail, a research question you could address using
GenBank. Explain exactly how you would use GenBank
to answer your question. If you would need information beyond what
is in GenBank, explain what information. If not, explain why
not

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