Conduct a structured investigation to work out

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Reference no: EM132221735

Question 1

There has been considerable effort to improve the water quality in the Swan River, but there is aneed for evidence about whether the interventions have been successful. Fortunately there has been long term monitoring established across time.

There are estimates for the amount of phosphorous that's being emitted into 31 different areas of the catchment.

Estimates are available for 2010 and 2017. The research question is whether the level of Phosphorous level has changed between 2010 and 2017. Conduct a structured data investigation to answer this question. Your answer should fit on a single page and should include:

a brief restatement of the research question

the most appropriate plot for this data structure. Think carefully about the nature of the data and the type of test you will conduct

for any test you conduct, a formal statement of a null and alternate hypothesis and the significance level that you will employ
output from the statistical analysis, conducted in R,

a formal statement of the test conclusion, including the justification of your conclusion

On the second page report the R script that you used for your analysis

Question 2

A lecturer has noticed that their female students are much more likely to turn up to lab classes than the male students, and wants to test to see if there is any differences in the marks of the two groups of students.

Conduct a structured investigation to work out whether the average marks earned by the group of male students is different to the marks earned by the group of female students. Your answer should fit on no more than one page and should include:

a brief restatement of the research question

the most appropriate plot for this data structure. Think carefully about the nature of the data and the type of test you will conduct

for any test you conduct, a formal statement of a null and alternate hypothesis and the significance level that you will employ

output from the statistical analysis, conducted in R

a formal statement of the test conclusion, including the justification of your conclusion

Reference no: EM132221735

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