What is a hypothesis? specifically is it a statement about, Ask an Expert

Statistics

a) What is a hypothesis? Specifically, is it a statement about the population or the sample?

b) What is the purpose of hypothesis testing?

c) How is the role of the null hypothesis different from that of the research (alternative) hypothesis?

d) Provide an example of a hypothesis test you could conduct at work. What is the measure that you will test?

a) What assumptions must be satisfied for a two-sided (non-directional) hypothesis test to be valid?

b) If an assumption was not satisfied, what, if anything, could be done to fix the problem?

c) Provide an example from your workplace or personal life of a two-sided hypothesis test.

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