A researcher hypothesizes that people who listen to classical music have higher concentration skills than those in the general population

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Question 1 - 40 points
A researcher hypothesizes that people who listen to classical music have higher
concentration skills than those in the general population. On a standard concentration
test, the overall mean is 15.5. The researcher gave this same test to a random sample of
12 individuals who regularly listen to classical music. Their scores on the test were as
follows:
16, 14, 20, 12, 25, 22, 23, 19, 17, 17, 21, 20
Is this a one- or two-tailed test?
Conduct all 6 steps of the appropriate statistic. Be sure to label all six steps.
Calculate and interpret the effect size for this test.
Question 1 Rubric
Requirements Point
s

2. Completed all questions (including sub-parts of questions) 20
Got the correct answer for all the questions (and sub-parts of questions)
* If answer was incorrect but you demonstrated the correct steps or
explained your answer well, you can earn back some of the points you
missed.
10
Showed all work or SPSS print out (when appropriate)
*If not required for a particular question, the points will be added to the
second criteria's points
10
Total 40

3. Question 2 - 50 Points
At some vacation destinations, “all-inclusive” resorts allow you to pay a flat rate and then
eat and drink as much as you want. There has been concern about whether these deals
might lead to excessive consumption of alcohol by young adults on spring break trips.
You decide to spend your spring break collecting data on this issue. Of course, you need
to take all of our friends on this funded research trip, because you need a lot of research
assistants! You collect data on the number of drinks consumed in a day by people staying
at all-inclusive resorts and by those staying at non-inclusive resorts. Your data include
the following:
All-inclusive resort guests: 10, 8, 13
Non-inclusive resort guests: 3, 15, 7
Conduct all 6 steps of an independent-samples t test. Be sure to label all six steps.
Report the statistics as you would in a journal article.
Question 2 Rubric
Requirements Point
s

4. Completed all questions (including sub-parts of questions) 30
Got the correct answer for all the questions (and sub-parts of questions)
* If answer was incorrect but you demonstrated the correct steps or
explained your answer well, you can earn back some of the points you
missed.
12
Showed all work or SPSS print out (when appropriate)
*If not required for a particular question, the points will be added to the
second criteria's points
8
Total 50

5. Question 3 - 60 Points
You wish to compare how a low-fat diet, low-fat diet and a brisk four-mile walk each day,
and a low-fat diet and a four-mile job each day affect cholesterol levels. You randomly
assign six subjects to each group. The scores in the table below show the reduction in
cholesterol count after two months.
Conduct all 6 steps of the appropriate statistic. Be sure to label all six steps.
Calculate and interpret the effect size for this test.
Calculate and interpret any post-hoc test if necessary.

6. Low-Fat
Diet
Diet and
Walk
Diet and
Run
10 14 19
8 12 15
15 18 14
12 16 16
9 13 18
6 17 20
Question 3 Rubric

7. Requirements Point
s
Completed all questions (including sub-parts of questions) 40
Got the correct answer for all the questions (and sub-parts of questions)
* If answer was incorrect but you demonstrated the correct steps or
explained your answer well, you can earn back some of the points you
missed.
12
Showed all work or SPSS print out (when appropriate)
*If not required for a particular question, the points will be added to the
second criteria's points
8
Total 60