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IE 330
Seat # ________
Name _______________________
Open book and notes. 120 minutes.
Covers Chapters 8 through 14 of Montgomery and Runger (fourth edition).
Cover page and eight pages of exam.
No calculator.
(2 points) I have, or will, complete a course evaluation.
____________________________________________________________
...sign here.
..
NEITK: "not enough information to know"
iid: "independent and identically distributed"
An element of an experiment is "random" if its value can change with each replication
of the experiment.
A bar over notation, such as
X
d
, denotes the sample mean.
There is no need to simplify calculations.
Score ___________________________
Final Exam (Dec 16, 2010)
Schmeiser
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View Full DocumentIE 330
Seat # ________
Name _______________________
Open book and notes. No calculator. 120 minutes.
1. True or false. (2 points each)
(a)
T
F
In hypothesis testing, failing to reject
H
0
leads to the strong claim that
H
0
is true.
(b)
T
F
In regression analysis, consider a fitted model that passes through all data
points. Because the fit cannot be better, using the fitted model for interpolation also
has no error.
(c)
T
F
Confidenceinterval length goes to zero as sample size goes to infinity.
(d)
T
F
Student’s T distribution is used to compare variances.
(e)
T
F
If two factors have an interaction effect, the effects are additive.
(f)
T
F
In hypothesis testing, with everything else being unchanged, more power
is good.
(g)
T
F
If only two factors are confounded, doubling the number of observations
at each design point will "unconfound" them.
(h)
T
F
In hypothesis testing, the greater the distance between the values in
H
0
and
H
1
, the greater the power of the test.
(i)
T
F
For all normal distributions, a bit more than 75% of the probability is
within one standard deviation of the mean.
(j)
T
F
If (
a
,
b
) is a 95% confidence interval for the variance
σ
2
, then (
√
dd
a
,
√
dd
b
) is
a 95% confidence interval for the standard deviation
σ
.
(k)
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 Fall '08

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