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For this course project we had to compare the means of two different populations

May 6, 2024

For this course project we had to compare the means of two different populations. I chose to do the resident and transient orca populations and compare their length means. below i will include the instructuions to the assigments I will also include the files of the data sets and the previous assigments done that the information is supposed to be used from. I will also include two refrences that i have used already. 
In the course project, you will create a research question, write down the research question in the form of a hypothesis, and statistically test the hypothesis using a method covered in this course. Therefore, it is essential to obtain an appropriate data set (of continuous variables) for analysis.
My research question is: Does the mean of the lengths of Transient orca population differ from the mean lengths of the Resident orca population.
Instructions: 
Topic selection and literature review (Week 1)
State the topic. Explain the rationale for the topic selection using support from your reference material(s).
At least one relevant literature source is referenced in the narrative. All reference(s) including the data source are cited in APA format.
Research Question and Descriptive Statistics (Week 2)
The research question is clearly stated. 
Include information regarding the source of data and method of data collection, including the area, date, variable(s), experimental/survey setting, and method of measurements.
Report the descriptive statistics, including sample size, mean, standard deviation, and five number summary  
Include an appropriately labeled graph (histogram).
Confidence interval(s) of the selected variable (Week 3) 
Report the confidence interval of the variable(s) and interpret it properly.
Hypothesis test and the conclusion of the study (Week 4)
Describe the null and alternative hypotheses in words and symbols.
Clearly report the results of the hypothesis test, including selected significance level and the distribution, test statistic, p-value, and decision to reject or fail to reject the null hypothesis.
The conclusions of the study are stated and they follow the results of the hypothesis test.
Week 2: Data and research question
In Week 2, you will finalize the research question and select a data set, which should align with your research question. You will then summarize the data visually and numerically. Refer to “Data and research question” below in selecting a data set and formulating a research question. You will complete these tasks by using an accompanied project worksheet (Project deliverable 2: Data and research question). Be sure to find a citation for your data set. 
Week 3: Confidence interval
In Week 3, you will calculate the confidence interval of the project data set and interpret the interval in words. You will complete these tasks by using an accompanied project worksheet (Project deliverable 3: Confidence interval). 
Week 4: Hypothesis test
In Week 4, you will conduct a hypothesis test using the project data set. It involves stating your research question as a hypothesis in words and symbols, selecting a significance level and probability distribution, calculating the test statistic and p-value, and stating a conclusion of the study. You will complete these tasks by using an accompanied project worksheet (Project deliverable 4: Hypothesis test). 
Week 5: Report 
In Week 5, you will create a report which summarizes all aspects of the project. 
Report: The project report is a compilation of the information from project deliverables 1 to 4.  The deliverable for this final assignment is a report, not a resubmission of your previously submitted deliverables. You must take the information from your worksheet deliverables and create a new report document from them. Your report should include (in this order):
Topic selection and literature review (Week 1)
Descriptive statistics and graphs of the data set (Week 2)
Confidence interval(s) of the selected variable (Week 3) 
Hypothesis test and the conclusion of the study (Week 4)
If you have received any feedback from the instructor to make corrections, it should be addressed in the course report. The expected size of the report is a minimum two pages not including references and graphic elements.
Refrences: 
Periodic status review for the killer whale – WDFW. (n.d.). https://wdfw.wa.gov/sites/default/files/publications/01773/wdfw01773.pdf 
https://wdfw.wa.gov/sites/default/files/publications/01773/wdfw01773.pdf
I have also included an example that the proffessor provided us with.

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