Question

Chi-Square - Test of Independence (10 pts).

A manger wants to see if geographical region is associated with ownership of a Macintosh computer. The manager surveys 100 people and the data break down as follows:

	Mac	No Mac	Row total
North East	12	14	26
South West	21	18	39
Mid West	17	18	35
Column Total	50	50	100

• Set the hypothesis
• Calculate the Critical and calculated chi-square values
• Make your conclusions whether the ownership of a mac and geographical region are related or not

Answer 1

Tabulated Statistics: C1, Worksheet columns

Rows: C1   Columns: Worksheet columns

	Mac	No Mac	All
NE	12	14	26
	13.00	13.00
SW	21	18	39
	19.50	19.50
MW	17	18	35
	17.50	17.50
All	50	50	100

Cell Contents
      Count
      Expected count

Chi-Square Test

	Chi-Square	DF	P-Value
Pearson	0.413	2	0.813

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Test stats is less than critical value so, fail to reject Ho. we have enough evidence to conclude that there is no association