Quantitative Variable we are interested in comparing: #
of HR’s (Home Run’s)
American
League:
National League:
Sample Size:
28
Sample Size:
22
Sample Mean:
20.14286
Sample Mean:
18.77
Sample Standard
Deviation:
10.44107
Sample Standard
Deviation:
8.257
You are now going to do a two-sample hypothesis test on this
data
Hypothesis: I would expect an American League player to
hit more HR’s (Home Run’s) on average, than a National League
Player?
- Introduction: State the topic of your study
and the hypothesis you’re interested in testing. Your hypothesis
should note a statistically significant result that you expected to
find and the rationale for why you expected this result.
- Define Populations: Define clearly the
populations that you intend for your study to represent. (Examples:
all NFL football players on two different teams, all cars
manufactured this year for Ford and Chevy, all biology and
chemistry majors at your school, etc.)
- Define Variables: Define clearly the variables
that you are using (Examples: Comparing ages, salaries, prices,
miles per gallon, scores on test, etc.).
- Results: Descriptive Statistics: Give
descriptive statistics for each data set.
- Table: Give sample size, mean, and standard
deviation for each data set.
- Study Design: Identify the statistical test
you conducted to analyze your data. Was it left-tailed,
right-tailed, or two-tailed? State the null and alternative
hypotheses, both in words and in appropriate symbols.
Identifying the statistical test we conducted to analyze our
data:
Left-tailed, right-tailed, or two-tailed?
- Results: Statistical Analysis: Report the
results of your test. Include the test statistic, degrees of
freedom, and the p-value of the significance test. Please use Excel
to complete.
Test Statistic:
Degrees of freedom:
P-Value:
- Findings: Interpret the results in the context
of your original research question. Do your analyses support your
expected findings? Explain. Interpret the p-value and compare it to
an alpha level of .05 (draw a conclusion on the test).
- Discussion: What conclusions, if any, do you
believe you can draw as a result of your study? If the results were
not what you expected, what factors might explain your results?
What did you learn from the project about the populations you
studied? What did you learn about the research variable? What did
you learn about the specific statistical test you conducted?