P^pf
'10
I
Observations
Hypothesized Difference
z Stat
P(Z<:z) one tail
z Critical onetail
P(Z<:z) twotail
z Critical two.tail
40
0
1.7292
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[email protected]
1.6449
0.083 8
1.96
Variance
Observations
Pearson Conelation
Hypothesized Mean Difference
df
t Star
P(T<:t) onetail
t Critical onetail
P(T<:t) twotail
t Critical two{ail
0.2404
40
0.2582
0
39
2.0r43
0.0255
t.6849
0.0509
2.0227
0.1 64
1
,10
25. Which
a.
b.
would best describe this research
design?
nonexperiment
posttest only quasiexperiment
pretest posttest quasiexperiment
true experiment
Use the following scenario to answer 4 questions.
The director of training for Snuggie, the manufacturer of the Snuggie sleeved blanket, is
interested in determining whether different training methods affect the
productivity of assembly
line employees. She randomly assigns
30 recently hired employees into
two groups
of
15. The
first group receives a computerassisted, individualbased training
program (COMP), and the
other receives a teambased training program (TEAM). Upon completion of the training, the
employees are evaluated on the time (in minutes)
it takes to assemble
a Snuggie.
26. whlch of the following is the proper
set of
hypotheses?
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Consider the outputs presented below, none of which may be correct.
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View Full DocumentPngl
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qutl
+
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FTest TwoSample for Variances

tTest: Paired Two Sample for Means
COMP TEAM
COIWP
TEAM
Mean
Va ria nce
Observations
df
F
P(F<=f) onetail
F Critical onetail
15.47
9"2
27.a4
18.89
15
1_5
1_4
L4
L.156
gJel*2.
fi.lt
2.484
Mean
Variance
Observations
Pearson Correlation
Hypotheslzed Mea n Difference
df
t Stat
15.8667
9.2
21.83a1 18.886
15
.15
o.1L47
o
14
3.83281
o.ooo91
1,.761,3L
o.oo183
2.L4479
Mean
Va ria nce
Observations
Hypothesized Mean
df
t Stat
P(T<=t) onetail
t Critical onetail
P(T<=t) twotail
t Critical twotail
Mean
Variance
Observations
Pooled Variance
Hypothesized Mean Difference
df
t Stat
P(T<=t) onetail
t Critical onetail
P(T<=t) twotail
t Critical twotail
15.8667
9.2
21.a381 18.886
15
15
20.3619
o
2a
4.04604
o.o4
r.70173
o.08
2.A4841
a.
b.
c.
o
e.
What was
a.
b.
/.1\
\J
d.
e.
29. The research design employed by the director
of training can be described
as a:
6
pretesi/posttesi
true
experiment
:
b.
pretest/posttest quasi experiment
c.
posttest only quasi experiment
d.
posttest only true experiment
e.
none ofthe above
Use the following information
to answer the next 4 questions.
Consultant Charles believes that the traditional workplace setting
with minimal or no technology
is more beneficial than the modern
hitech setting to foster
a high sense
of employee bonding
ani
27. Which of the statistical analyses would you use to make
a co11ect research
decision?
FTest Two Sample for Variances
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 Spring '05
 Jensen
 Standard Deviation, Variance, Null hypothesis, Equal variances, Unequal Variances, Assuming Equal Variances

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