Write appropriate null hypotheses

Reference no: EM131427013

Full moon, next phase. In given Exercise you found that the expected cell counts failed to satisfy the conditions for inference.

a) Find a sensible way to combine some cells that will make the expected counts acceptable.

b) Test a hypothesis about the full moon and state your conclusion.

Exercise :
Full moon. Some people believe that a full moon elicits unusual behavior in people. The table shows the number of arrests made in a small town during weeks of six full moons and six other randomly selected weeks in the same year. We wonder if there is evidence of a difference in the types of illegal activity that take place.

	Full Moon	Not Full
Violvent (murder, assult, rape, etc)	2	3
Property (burglary, vandalism, etc)	17	21
Drugs/Alchohol	27	19
Domestic Abuse	11	14
Other OFfenses	9	6

a) Will you test goodness-of-fit, homogeneity, or independence?

b) Write appropriate null hypotheses.

c) Find the expected counts for each cell, and explain why the chi-square procedures are not appropriate for this table.

Reference no: EM131427013

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