RAPP1007
Lab Test 1 Practice
The data for the test is in the MS-Excel file posted with this test. You are free to use whichever method
(e.g., SPSS, MS-Excel) you prefer to complete the calculations. You have one hour and fifty minutes to
complete the practice lab test. Unless otherwise stated, for all inferential tests, alpha is set to XXXXXXXXXXI
will take up the exam starting at 2pm.
Elite-Level questions have been added. These questions will not be on the test next week.
1. I have investigated stress among Amazon warehouse pickers. For my
study I measured job stress by employee Job Classification (Apprentice
Picker, Junior Picker, and Senior Picker) and Employee Age (“Under
65” and “65 and older”).
a. Complete the appropriate omnibus inferential tests and state
your conclusions.
. Complete simple main effects for the factor “Job Classification”
c. Where needed, complete Tukey’s HSD
d. Elite-Level Question: Complete the following planned comparisons for the “Job
Classification” main effect and the “Job Classification” x Employee Age interaction
i. Apprentice compared to Junior and Senior Pickers
ii. Junior Pickers compared to Senior Pickers
2. I have data on a study that investigated the impact of noise (None, Low, Medium, High noise
levels) on task performance for Amazon warehouse pickers. The scores represent the time it
took in minutes to pick and package 100 books for shipment. So the higher the time per noise
level the poorer the performance. Subjects completed the task for all four noise levels.
a. Complete the appropriate inferential test and complete fill in the source table below
. When needed complete post hoc comparisons of means
c. Write up your conclusion
d. Elite-Level Question: Complete the following planned comparisons
i. Noise compared to Low, Medium, and High
ii. Low compared to Medium and High
iii. Medium compared to High
Source SS df MS f f critical
Noise
Subjects
E
o
Total
3. I plan to complete the following two planned comparisons;
P1: Group A and Group B compared to Group C, Group D, and Group E
` P2: Group B compared to Group D and Group E
a. State the null hypothesis for both comparisons
. Are the two comparisons orthogonal (independent)?
4. I plan to complete ten pairwise comparisons of means and I have set alpha equal to 0.01.
Assuming the null hypothesis is true for all comparisons, what is the probability that I will reject the
null hypothesis (commit a type I e
or) one or more times?
5. I am looking to see if the average number of “Litres of Syrup Sold” differs among the five
townships of Severn, Tay, Tiny, Springwater, and Essa. Per township, I collected the “Litres of
Syrup Sold” from three farms. Please complete the following tasks (for all tests Alpha equal to
0.05);
a. Complete the appropriate inferential test.
. Complete the following planned comparisons
i. Severn, Tay, and Tiny compared to Springwater and Essa
ii. Severn compared to Tay and Tiny
iii. Tay compared to Tiny
iv. Springwater compared to Essa
. State your conclusions
6. I have collected running speed data (Miles per Hour) for a sample of
Golden Retrievers and Boston Te
iers. Are Golden Retrievers faster
than Boston Te
iers?
7. For a two-tailed independent means t-test with 15 subjects in each group show the following on
the diagram to the right;
a. The critical value(s) for alpha equal to 0.01
. Shade in the critical region(s).
c. The location of a t-observed
equal to 2.80
d. State your conclusion
Q1
Employee Classification Age Stress
1 Senior Picker Under 65 146
2 Senior Picker Under 65 144
3 Senior Picker Under 65 151
4 Senior Picker Under 65 134
5 Senior Picker 65 and Older 155
6 Senior Picker 65 and Older 156
7 Senior Picker 65 and Older 162
8 Senior Picker 65 and Older 163
9 Junior Picker Under 65 144
10 Junior Picker Under 65 150
11 Junior Picker Under 65 141
12 Junior Picker Under 65 146
13 Junior Picker 65 and Older 147
14 Junior Picker 65 and Older 138
15 Junior Picker 65 and Older 144
16 Junior Picker 65 and Older 138
17 Apprentice Picker Under 65 150
18 Apprentice Picker Under 65 146
19 Apprentice Picker Under 65 144
20 Apprentice Picker Under 65 138
21 Apprentice Picker 65 and Older 140
22 Apprentice Picker 65 and Older 146
23 Apprentice Picker 65 and Older 147
24 Apprentice Picker 65 and Older 142
Q2
Employee none low medium high
1 52 55 41 68
2 60 61 48 72
3 55 59 38 79
4 40 45 37 51
5 48 58 45 45
Source SS df MS f f critical
Noise
Subjects
E
o
Total
Q5
Farm Township Litres of Syrup Sold
1 Severn 31
2 Severn 36
3 Severn 41
4 Tay 32
5 Tay 37
6 Tay 42
7 Tiny 39
8 Tiny 44
9 Tiny 49
10 Springwater 42
11 Springwater 47
12 Springwater 52
13 Essa 46
14 Essa 51
15 Essa 56
Q6
Dog Breed Speed (Miles/Hour)
1 Boston Te
ier 26
2 Boston Te
ier 32
3 Boston Te
ier 34
4 Boston Te
ier 34
5 Boston Te
ier 31
6 Boston Te
ier 49
7 Golden Retreiver 28
8 Golden Retreiver 45
9 Golden Retreiver 49
10 Golden Retreiver 49
11 Golden Retreiver 43
12 Golden Retreiver 47
Q1
Employee Classification Age Stress Tests of Between-Subjects Effects
1 Senior Picker Under 65 146 Dependent Variable: Stress Descriptive Statistics
2 Senior Picker Under 65 144 Dependent Variable: Stress
3 Senior Picker Under 65 151 Classification Age Mean
4 Senior Picker Under 65 134 Source SS df MS F Sig. Apprentice Picker 65 and Older 143.75
5 Senior Picker 65 and Older 155 Classification 306.583 2 153.292 6.665 0.007 Under 65 144.5
6 Senior Picker 65 and Older 156 Age 80.667 1 80.667 3.507 0.077 Total 144.125
7 Senior Picker 65 and Older 162 Classification * Age 410.083 2 205.042 8.915 0.002 Junior Picker 65 and Older 141.75
8 Senior Picker 65 and Older 163 E
or 414 18 23 Under 65 145.25
9 Junior Picker Under 65 144 Total 515134 24 Total 143.5
10 Junior Picker Under 65 150 Senior Picker 65 and Older 159
11 Junior Picker Under 65 141 Under 65 143.75
12 Junior Picker Under 65 146 65 and Older n= 4 Total 151.375
13 Junior Picker 65 and Older 147 Apprentice Picker Junior Picker Senior Picker Mean Total 65 and Older XXXXXXXXXX
14 Junior Picker 65 and Older 138 143.75 141.75 159 XXXXXXXXXX Under 65 144.5
15 Junior Picker 65 and Older 144 SS XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX Total XXXXXXXXXX
16 Junior Picker 65 and Older 138 df 2
17 Apprentice Picker Under 65 150 MS XXXXXXXXXX
18 Apprentice Picker Under 65 146 f XXXXXXXXXX
19 Apprentice Picker Under 65 144 p value XXXXXXXXXX
20 Apprentice Picker Under 65 138
21 Apprentice Picker 65 and Older 140 Tukey's
22 Apprentice Picker 65 and Older 146 q 3.61
23 Apprentice Picker 65 and Older 147 HSD XXXXXXXXXX
24 Apprentice Picker 65 and Older 142
Apprentice Picker Junior Picker Senior Picke
143.75 141.75 159
Apprentice Picker 143.75
Junior Picker 141.75 2
Senior Picker 159 15.25 17.25
Under 65
Apprentice Picker Junior Picker Senior Picke
144.5 145.25 143.75 144.5
SS 0 2.25 2.25 4.5
df 2
MS 2.25
f XXXXXXXXXX
p value XXXXXXXXXX
UNIANOVA Stress BY Age Classification
/METHOD=SSTYPE(3)
/INTERCEPT=INCLUDE
/CRITERA=ALPHA(.05)
/LMATRIX 'Over 65 Classification Simple Main Effect'
Classification XXXXXXXXXXAge*Classification XXXXXXXXXX0;
Classification XXXXXXXXXXAge*Classification XXXXXXXXXX
/LMATRIX '65 and under Classification Simple Main Effects'
Classification XXXXXXXXXXAge*Classification XXXXXXXXXX;
Classification XXXXXXXXXXAge*Classification XXXXXXXXXX
/DESIGN=Age Classification Age*Classification.
EXECUTE.
Q2
Employee none low medium high SS Sub Employee none low medium high
1 52 55 41 68 54 5.29 1 1 5 140 230
2 60 61 48 72 60 219.04 2 51 66 24 367
3 55 59 38 79 58 96.04 3 5 38 221 684
4 40 45 37 51 43 368.64 4 165 62 251 3
5 48 58 45 45 49 59.29 5 24 27 62 62
3 51 56 42 63 53
748.3 2485
Source SS df MS f f critical
Noise 1180.55 3 393.517 8.498 XXXXXXXXXX
Subjects 748.3 4
E
or 555.7 12 46.308
Total 2484.55 19
Tests of Within-Subjects Effects
Measure: MEASURE_1
Source Type III Sum of Squares df Mean Square F Sig. q 4.2
Noise 1180.55 3 393.517 8.498 0.003 ms 46.308
Subject 748.30 4 N 5
E
or(Noise) 555.70 12 46.308 hsd XXXXXXXXXX
Total 2484.55 19
none low medium high
51 56 42 63
none 51
low 56 5
medium 42 -9 -14
high 63 12.0 7 21
COMPUTE P1=(+3)*none+(-1)*low+(-1)*medium+(-1)*high.
COMPUTE P2=(0)*none+(+2)*low+(-1)*medium+(-1)*high.
COMPUTE P3=(0)*none+(0)*low+(+1)*medium+(-1)*high.
EXECUTE.
Q3
Q4
XXXXXXXXXX
Q5
Farm Township Litres of Syrup Sold
1 Severn 31
2 Severn 36
3 Severn 41
4 Tay 32
5 Tay 37
6 Tay 42
7 Tiny 39
8 Tiny 44
9 Tiny 49
10 Springwater 42
11 Springwater 47
12 Springwater 52
13 Essa 46
14 Essa 51
15 Essa 56
Farm Township Litres of Syrup Sold
1 0 31
2 0 36
3 0 41
4 1 32
5 1 37
6 1 42
7 2 39
8 2 44
9 2 49
10 3 42
11 3 47
12 3 52
13 4 46
14 4 51
15 4 56
Descriptives
Syrup
N Mean Std. Deviation Std. E
or 95% Confidence Interval for Mean Minimum Maximum
Lower Bound Upper Bound
Severn 3 36 5 2.88675 23.5793 48.4207 31 41 39
Tay 3 37 5 2.88675 24.5793 49.4207 32 42
Tiny 3 44 5 2.88675 31.5793 56.4207 39 49
Springwater 3 47 5 2.88675 34.5793 59.4207 42 52
Essa 3 51 5 2.88675 38.5793 63.4207 46 56 47
Total 15 43 7.30949 1.8873 38.9521 47.0479 31 56
ONEWAY Syrup BY Location
/CONTRAST= XXXXXXXXXX
/CONTRAST= XXXXXXXXXX
/CONTRAST= XXXXXXXXXX
/CONTRAST= XXXXXXXXXX
/ES=OVERALL
/STATISTICS DESCRIPTIVES
/MISSING ANALYSIS
/CRITERIA=CILEVEL(0.95).
EXECUTE.
Q6
Dog Breed Speed (Miles/Hour) Dog Breed Speed (Miles/Hour)
1 Boston Te
ier 26 1 0 26
2 Boston Te
ier 32 2 0 32
3 Boston Te
ier 34 3 0 34
4 Boston Te
ier 34 4 0 34
5 Boston Te
ier 31 5 0 31
6 Boston Te
ier 49 6 0 49
7 Golden Retreiver 28 7 1 28
8 Golden Retreiver 45 8 1 45
9 Golden Retreiver 49 9 1 49
10 Golden Retreiver 49 10 1 49
11 Golden Retreiver 43 11 1 43
12 Golden Retreiver 47 12 1 47
Q7
t obs
2.8
Yes I would reject H0.
-2.763 2.763
df 28
t critical XXXXXXXXXX
n
MS
qHSD
treatmentswithin