Health Care Knowledge Systems reported that an insured woman spends on average 2.3 days in the hospital for routine childbirth, while an uninsured woman spends on average 1.9 days. Assume two random samples of 16 women each were used in both samples. The population standard deviation of insured women is equal to 0.6 day, and the population standard deviation of uninsured women is 0.3 day. Find the 99% confidence interval for the differences of the means.
Health Care Knowledge Systems reported that an insured woman spends on average 2.3 days in the hospital for routine childbirth, while an uninsured woman spends on average 1.9 days. Assume two random samples of 16 women each were used in both samples. The population standard deviation of insured women is equal to 0.6 day, and the population standard deviation of uninsured women is 0.3 day. Find the 99% confidence interval for the differences of the means.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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![Health Care Knowledge Systems reported that an insured woman spends on average 2.3 days in the
hospital for routine childbirth, while an uninsured woman spends on average 1.9 days. Assume two
random samples of 16 women each were used in both samples. The population standard deviation of
insured women is equal to 0.6 day, and the population standard deviation of uninsured women is 0.3
day. Find the 99% confidence interval for the differences of the means.
a) Which formula will you use for this problem?
O – za/2
<µ < ã + za/2
Vn
On =
E
O - ta/2
Vn
<H < ã + ta/2
Vn
Za12
On = · ĝ ·-
p q (
E
of
O (¤1 – ¤2) – Za/2
< Hi – Hz < (@1 – ¤2) + za/2· 1
n2
V ni
ni
n2
P2 â2
P2· 42
(P1 – P2) – Za/2
< Pi – P2 < (P1 – P2) + za/2 °
n1
n2
n1
n2
Op – za/2°
< p <p + za /2
n
n
O (ã1 – 72) – ta/2 · \/
< µ1 – µ2 < (ãi – ¤2) + ta/2 ·
V ni
ni
n2
n2
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888
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F8
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4
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Transcribed Image Text:Health Care Knowledge Systems reported that an insured woman spends on average 2.3 days in the
hospital for routine childbirth, while an uninsured woman spends on average 1.9 days. Assume two
random samples of 16 women each were used in both samples. The population standard deviation of
insured women is equal to 0.6 day, and the population standard deviation of uninsured women is 0.3
day. Find the 99% confidence interval for the differences of the means.
a) Which formula will you use for this problem?
O – za/2
<µ < ã + za/2
Vn
On =
E
O - ta/2
Vn
<H < ã + ta/2
Vn
Za12
On = · ĝ ·-
p q (
E
of
O (¤1 – ¤2) – Za/2
< Hi – Hz < (@1 – ¤2) + za/2· 1
n2
V ni
ni
n2
P2 â2
P2· 42
(P1 – P2) – Za/2
< Pi – P2 < (P1 – P2) + za/2 °
n1
n2
n1
n2
Op – za/2°
< p <p + za /2
n
n
O (ã1 – 72) – ta/2 · \/
< µ1 – µ2 < (ãi – ¤2) + ta/2 ·
V ni
ni
n2
n2
MacBook Air
DII
DD
80
888
F9
F10
F6
F7
F8
F3
F4
F5
2$
&
4
5
7
8.
< co
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