homework. answer all questions.Bios 1 Nurs 717AP HW #4 Question 1) Let say a researcher who wants to...

Question

homework. answer all questions.Bios 1 Nurs 717AP HW #4 Question 1) Let say a researcher who wants to study on physical activity of nursing students.  A researcher wants to examine the physical activity by student year in school (freshman, sophomore, junior, and senor). He will use established physical activity measurement.  a) What statistical test researcher should use?  1. Two sample T-test 2. Analysis of Variance (ANOVA) 3. Two sample proportion 4. None of above b) Write the null and alternative hypothesis for part a.   1. Ho: 1 = 2 =3 = 4 and   H1: At least one test is not equal 2. Ho: 1 = 2   and   H1: At least one test is not equal 3. Ho: 3  = 4  and   H1: At least one test is not equal 4. None of above Question 2) The following is a study to examine three methods (1-3) to reduce stress from patients with chronic disease. There were 5 subjects for each group. Use the output or calculate by hand. 	 	1 	2 	3 	Total 	 	14 14 15 20 25 	24 24 18 19 25 	30 21 30 32 35 	 	Total 	88 	110 	148 	       346 	Mean 	17.6 	22 	29.60 	23.07 	Variance 	23.3 	10.5 	27.3 	43.78 	n 	5 	5 	5 	15 	Source 	DF 	Sum of Squares 	Mean Square 	F Value 	Pr > F 	Model 	2 	368.5333333 	184.2666667 	9.05 	0.0040 	Error 	12 	244.4000000 	20.3666667 	 	 	Corrected Total 	14 	612.9333333 	 	 	 a) What is the SSBetween? 1. 244.4 2. 100.55 3. 368.5 4. 442.36 b) What is the SSWithin or Error? 1. 244.4 2. 100.55 3. 197.96 4. 442.36 c) What is the SSTotal?.  1. 244.4 2. 100.55 3. 197.96 4. 612.9 d) What is the F value? 1. 9.05 2. 10.55 3. 19.96 4. 2.36  e) Can we conclude from these data the three methods differ in reducing stress using alpha .05?  1. Yes, Since F statistics is greater than F value from F table we can conclude from these data the three methods differ in reducing stress using alpha .05 2. No, Since F statistics is less than F value from F table we cannot conclude from these data the three methods differ in reducing stress using alpha .05 Output: 	Source 	DF 	Sum of Squares 	Mean Square 	F Value 	Pr > F 	Model 	2 	368.5333333 	184.2666667 	9.05 	0.0040 	Error 	12 	244.4000000 	20.3666667 	 	 	Corrected Total 	14 	612.9333333 	 	 	 Question 3) The following are SAS output for multiple comparison tests Tukey and Bonferroni Methods.    Tukey Mehtod 	Alpha 	0.05 	Error Degrees of Freedom 	12 	Error Mean Square 	20.36667 	Critical Value of Studentized Range 	3.77289 	Minimum Significant Difference 	7.6146 	Comparisons significant at the 0.05 level are indicated by ***. 	x Comparison 	Difference Between Means 	Simultaneous 95% Confidence Limits 	 	group 3 - group 2 	7.600 	-0.015 	15.215 	 	group 3 - group 1 	12.000 	4.385 	19.615 	*** 	group 2 - group 3 	-7.600 	-15.215 	0.015 	 	group 2 - group 1 	4.400 	-3.215 	12.015 	 	group 1 - group 3 	-12.000 	-19.615 	-4.385 	*** 	group 1 - group 2 	-4.400 	-12.015 	3.215 	 Bonferroni Method: 	Alpha 	0.05 	Error Degrees of Freedom 	12 	Error Mean Square 	20.36667 	Critical Value of t 	2.77947 	Minimum Significant Difference 	7.9333 	Means with the same letter are not significantly different. 	Bon Grouping 	Mean 	N 	x 	 	A 	29.600 	5 	group 3 	 	A 	 	 	 	B 	A 	22.000 	5 	group 2 	B 	 	 	 	 	B 	 	17.600 	5 	group 1 What statement is correct for both tests? 1. Both methods show group 3 is only different from group1 2. Both methods did not show the same result 3. Tukey’s method indicated more significant than Bonferroni method. 4. Bonferroni method indicated more significant than Tukey method Question4) The effect of three types of physical activity and working status on reducing anxiety of 25 randomly selected of participant that comes for his or her annual check- up. The numbers of subjects in each clinic were classified by type of physical activity and working status as follow: 	Type of physical activity 	Working Status 	 	No 	Yes 	None 	18,19,20,22 	30,32,33,33,34 	Light 	35,36,37 	20,21,22,23 	Moderate to High 	20,21,22,23,24 	29,30,33,34 Use Sas Output to answer the following: a) What is the F value?  1. 14.864 2. 20.55 3. 15.96 4. 25.38 b) What effects are significant (the main effects and interaction)?  Let alpha=0.05. 1. Only factor a  2. Only factor b 3. Only interaction effect a*b 4. Both factor a and b  c) What is the result for adjusted Tukey for factor a?    1.  Group light is different from moderate and none. Also, group moderate is different from none. 2. Group light is only different from none. 3. Group light is only different from moderate. 4. Group moderate is only different from none. 	d) Class Level Information 	Class 	Levels 	Values 	a 	3 	light moderate to high none 	b 	2 	No yes 	Number of Observations Read 	25 	Number of Observations Used 	25 	Source 	DF 	Sum of Squares 	Mean Square 	F Value 	Pr > F 	Model 	5 	559.2900000 	111.8580000 	25.38 	 F 	a 	2 	367.6114286 	183.8057143 	41.70 	 F 	a 	2 	309.2010309 	154.6005155 	35.07 	 |t| for H0: LSMean(i)=LSMean(j) Dependent Variable: y 	i/j 	1 	2 	3 	1 	 	0.0009 	0.0073 	2 	0.0009 	 	 |t| 	No 	14.9833333 	 F 	Model 	5 	1133.383333 	226.676667 	64.70 	 F 	a 	2 	20.0462121 	10.0231061 	2.86 	0.0768 	b 	1 	127.7829823 	127.7829823 	36.47 	 F 	a 	2 	23.8800813 	11.9400407 	3.41 	0.0498 	b 	1 	44.2002252 	44.2002252 	12.62 	0.0016 	a*b 	2 	985.5541390 	492.7770695 	140.65 	 |t| for H0: LSMean(i)=LSMean(j) Dependent Variable: y 	i/j 	1 	2 	3 	1 	 	0.0409 	0.6363 	2 	0.0409 	 	0.2077 	3 	0.6363 	0.2077 	 Gender 	b 	y LSMEAN 	H0:LSMean1=LSMean2 	 	 	Pr > |t| 	female 	28.8444444 	0.0016 	male 	26.3833333 	 Interaction comparison 	a 	b 	y LSMEAN 	LSMEAN Number 	treatment  1 	female 	32.8333333 	1 	treatment  1 	male 	20.4000000 	2 	treatment 2 	female 	21.5000000 	3 	treatment 2 	male 	36.2500000 	4 	treatment 3 	female 	32.2000000 	5 	treatment 3 	male 	22.5000000 	6 	Least Squares Means for effect a*b Pr > |t| for H0: LSMean(i)=LSMean(j) Dependent Variable: y 	i/j 	1 	2 	3 	4 	5 	6 	1

Rajeswari · Accepted Answer

Bios
14
Nurs 717AP
HW #4
Question 1) Let say a researcher who wants to study on physical activity of nursing students.  A researcher wants to examine the physical activity by student year in school (freshman, sophomore, junior, and senor). He will use established physical activity measurement. 
a) What statistical test researcher should use? 
1. Two sample T-test
2. Analysis of Variance (ANOVA)
3. Two sample proportion
4. None of above
Answer is 2. Anova
(Reason: more than 2 samples)
b) Write the null and alternative hypothesis for part a.  
1. Ho: 1 = 2 =3 = 4 and   H1: At least one test is not equal
2. Ho: 1 = 2   and   H1: At least one test is not equal
3. Ho: 3  = 4  and   H1: At least one test is not equal
4. None of above
Answer is 1. Ho: 1 = 2 =3 = 4 and   H1: At least one test is not equal
(because we assume in H0 all means are equal)
Question 2) The following is a study to examine three methods (1-3) to reduce stress from patients with chronic disease. There were 5 subjects for each group. Use the output or calculate by hand.
	
	1
	2
	3
	Total
	
	14
14
15
20
25
	24
24
18
19
25
	30
21
30
32
35
	
	Total
	88
	110
	148
	       346
	Mean
	17.6
	22
	29.60
	23.07
	Variance
	23.3
	10.5
	27.3
	43.78
	n
	5
	5
	5
	15
	Source
	DF
	Sum of Squares
	Mean Square
	F Value
	Pr > F
	Model
	2
	368.5333333
	184.2666667
	9.05
	0.0040
	Error
	12
	244.4000000
	20.3666667
	
	
	Corrected Total
	14
	612.9333333
	
	
	
a) What is the SSBetween?
1. 244.4
2. 100.55
3. 368.5
4. 442.36
Answer is 3. 368.5
b) What is the SSWithin or Error?
1. 244.4
2. 100.55
3. 197.96
4. 442.36
Answer is 1.244.4
c) What is the SSTotal?. 
1. 244.4
2. 100.55
3. 197.96
4. 612.9
Answer is 4. 612.9
d) What is the F value?
1. 9.05
2. 10.55
3. 19.96
4. 2.36 
Answer is 9.05
e) Can we conclude from these data the three methods differ in reducing stress using alpha .05? 
1. Yes,

Bios 1 Nurs 717AP HW #4 Question 1) Let say a researcher who wants to study on physical activity of nursing students. A researcher wants to examine the physical activity by student year in school...

Answer To: Bios 1 Nurs 717AP HW #4 Question 1) Let say a researcher who wants to study on physical activity of...

Answer To This Question Is Available To Download

Related Questions & Answers

Submit New Assignment