Confidence Intervals: Slope of Regression Models
AP Statistics · Flashcards · Application
AP STATISTICS · FLASHCARDS
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QUESTION
Compute the margin of error if
t
∗
=
2.10
t^*=2.10
t
∗
=
2.10
and
S
E
b
=
0.40
SE_b=0.40
S
E
b
=
0.40
.
QUESTION
Identify the degrees of freedom for slope inference when
n
=
18
n=18
n
=
18
paired observations are used.
QUESTION
Compute
d
f
df
df
for a slope confidence interval when the sample size is
n
=
18
n=18
n
=
18
.
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ANSWER
16
16
16
.
d
f
=
18
−
2
=
16
df = 18 - 2 = 16
df
=
18
−
2
=
16
.
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