Suppose a sample of 20 students were given a diagnostic test before studying a particular module and then again after co

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Suppose a sample of 20 students were given a diagnostic test
before studying a particular module and then again after completing
the module. We want to find out if, in general, our teaching leads
to improvements in students’ knowledge/skills (i.e. test scores).
We can use the results from our sample of students to draw
conclusions about the impact of this module in general.
state the null and alternative hypothesis.
a.symbolic form and written form
b. State decision about the null hypothesis according to t-test
guidelines
c. Report Results in APA Style according to t-test
guidelines