Justifying Claims: Population Mean, Confidence Interval
AP Statistics · Flashcards · Application
AP STATISTICS · FLASHCARDS
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QUESTION
Which sample size gives a more precise estimate,
n
=
30
n=30
n
=
30
or
n
=
100
n=100
n
=
100
?
QUESTION
Which confidence interval is wider, 90% or 95%?
QUESTION
If a 95% CI is (10, 20), what is the point estimate?
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ANSWER
15. Midpoint of interval endpoints:
(
10
+
20
)
/
2
=
15
(10 + 20)/2 = 15
(
10
+
20
)
/2
=
15
.
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