Name: _______________KEY___________________
B
28 February 2011
IE330 Spring 2011
Quiz #4b
Test statistics
(
29
(
29
(
29
0
1
2
1
2
2
2
0
0
0
1
2
0
0
0
0
0
2
2
2
0
0
0
1
2
2
2
1
1
2
2
*
2
1
2
0
0
1
2
0
0
0
0
2
2
1
2
1
2
1
2
1
/
/
(1
)
1
1
2
/
1
1
p
D
p
n
S
X
X
X
np
X
X
Z
T
Z
Z
n
s
n
np
p
n
n
n
S
n
S
X
X
D
X
X
T
T
T
S
Z
n
n
S
n
s
s
S
n
n
n
n
μ
μ
χ
σ
σ
σ
σ





 ∆
=
=
=
=
=

+

+


 ∆
 ∆

 ∆
=
=
=
=
+

+
+
(
29
1
2
0
1
2
ˆ
ˆ
1
1
ˆ
ˆ
1
P
P
P
P
n
n

=

+
1
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Name: _______________KEY___________________
B
1.
(TRUE or
FALSE)
For a simple linear regression model, the pvalue of β
1
is
equal to the pvalue of
β
0
2.
Suppose that for a particular set of data x
1
, x
2
, x
3
, the sample variance is s
2
= 0 and
the sample mean is
x
= 107.75. What is the value of x
2
?
107.75 (there is no variance … all values are equal)
3.
(TRUE or
FALSE)
A 90% confidence interval bounds 90% of the population.
4.
Consider the following regression, where 30 samples were taken to determine the
strength of a bond between two beams for a given concentration of a compound in
a particular type of glue.
a.
Determine the pvalues missing from the regression below.
You do not
have to interpolate – you can state your answer as “< p”, where p is the
smallest α in Table IV that is larger than your answer.
This is the end of the preview.
Sign up
to
access the rest of the document.
 Spring '08
 Statistics, Econometrics, Linear Regression, Regression Analysis, Errors and residuals in statistics, Prediction interval

Click to edit the document details