A professor at the University of Iowa was interested in evaluating whether domestic dispute calls were more dangerous to officers than other types of calls. Collecting information on call for service and whether the call resulted in officer injury. The data is displayed in the contingency table below. Type of Call Domestic Dispute Not a Domestic Dispute Officer Injury No 128 675 Yes 245 786 Using the information to complete Table 1 and answer the questions below.Table 1. Chi-square (4 points, 1 per column) Category Observed Expected O – E (O – E)2 (O – E)2/E No, Domestic 128 No, Not Domestic 675 Yes, Domestic 245 Yes, Not Domestic 786 What is the scale of measurement of the dependent variable? What is the value for the chi-square? Using an alpha level of 0.05, what is the critical value?

A professor at the University of Iowa was interested in evaluating whether domestic dispute calls were more dangerous to officers than other types of calls. Collecting information on call for service...

A professor at the University of Iowa was interested in evaluating whether domestic dispute calls were more dangerous to officers than other types of calls. Collecting information on call for service and whether the call resulted in officer injury. The data is displayed in the contingency table below.

		Type of Call
		Domestic Dispute	Not a Domestic Dispute
Officer Injury	No	128	675
	Yes	245	786

Using the information to complete Table 1 and answer the questions below.

Table 1. Chi-square (4 points, 1 per column)

Category	Observed	Expected	O – E	(O – E)²	(O – E)²/E
No, Domestic	128
No, Not Domestic	675
Yes, Domestic	245
Yes, Not Domestic	786


What is the scale of measurement of the dependent variable?
What is the value for the chi-square?
Using an alpha level of 0.05, what is the critical value?

Jun 09, 2022

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