describe the structure of the database and apply some descriptive statistics that can summarize

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Sustainable agricultural practices are nowadays designed to provide multiple ecosystem services. The soil organic carbon (SOC) content is used as a broad indicator that embeds many agronomic and environmental aspects such as soil fertility, carbon dioxide sequestration, soil biodiversity, etc.

Different cultivation systems (conservation agriculture-CA; organic farming-OF; conventional farming-CF) are here compared to test whether their application enhances the SOC (g kg-1 ) content. The test is conducted in the field under a completely randomized experimental design.

Your tasks are:

a) Describe the structure of the database and apply some descriptive statistics that can summarize the main statistical aspects of the database.

b) Identify the null hypothesis H0, and the alternative hypothesis H1.

c) Identify and apply the correct statistical test to verify the null hypothesis.

d) Report the scripts you used and the outcomes from the test.

e) Report graphically your results with suitable graph(s).

f) Draw your conclusions based on the statistical outcomes.

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