Question

Kuya conducted a study to see if, among smokers, that there is a significant difference in the sense of smoking urge between individuals in various levels of administration.  To measure the urge to smoke, the Chronic Habit Obliging Killer Emphysema (CHOKE) test was used.  Type of profession was categorized to Upper Management, Middle Management, and Lower Management.  The higher the score, the stronger the urge.  Is there a significant difference in their urge?

UPPER	MIDDLE	LOWER
44	47	31
45	48	32
50	43	36
50	40	39
49	50	36
49	49	37
46	46	33
46	45	26
42	44	32
40	46	35
44	43	26
45	36	34
	43	30
	50	37
	42	38
	37	40
	36	32
	37	30
	50	36
	46	38
	48	40
	44	37
	43	37
	44	27
	41	28
	35	25
	50	39
	38	37
	35	31
		25
		36
		29
		26
		36
		39
		37
		40
		38
		25
		37
		26
		36
		31
		29

The appropriate test for this problem is:

1. t test for one sample
2. t test for dependent samples
3. t test for independent samples
4. one-way ANOVA
5. repeated measurements ANOVA

The obtained statistic value is:

1. 20.98
2. 32.86
3. 44.74
4. 56.62

The associated p value is:

1. < .1
2. < .01
3. < .001
4. < .0001

Decision is:

1. reject the null
2. retain the null

Conclusion is:

1. middle management showed stronger urge than lower management
2. lower management showed stronger urge than upper management
3. upper management showed stronger urge than middle management
4. no conclusion can be drawn

Answer 1

The appropriate test for this problem is:

d) one-way ANOVA

Data Summary
Groups	N	Mean	Std. Dev.	Std. Error
Upper	12	45.8333	3.1861	0.9198
Middle	29	43.3103	4.8778	0.9058
Lower	44	33.3864	4.8427	0.7301

ANOVA Summary
Source	Degrees of Freedom DF	Sum of Squares SS	Mean Square MS	F-Stat	P-Value
Between Groups	2	2466.8364	1233.4182	56.6203	0
Within Groups	82	1786.2906	21.784
Total:	84	4253.127

The obtained statistic value is:

d) 56.62

The associated p value is:

d) < .0001

Decision is:

a) reject the null