. A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2740 occupants not wearing seat belts, 38 were killed. Among 7645 occupants wearing seat belts, 12 were killed. Use a 0.05 significance level to test the claim that seat belts are effective in reducing fatalities. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of occupants not wearing seat belts and the second sample to be the sample of occupants wearing seat belts. What are the null and alternative hypotheses for the hypothesis test? OA Ho: P1 P₂1 H₁: P₁ P₂ OD. Ho: P₁ P2 H₁: P₁ P₂ Identify the test statistic. z = 7.98 (Round to two decimal places as needed.) Identify the P-value. P-value= (Round to three decimal places as needed.) B. Ho: P1 P₂ H₁: P₁ P₂ m OE. Ho: P₁ P2 H₁: P₁ P₂ OC. Ho: P₁ P₂ H₁: P₁ P₂ OF. Ho: Pq SP₂ H₁: P₁ P₂
. A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2740 occupants not wearing seat belts, 38 were killed. Among 7645 occupants wearing seat belts, 12 were killed. Use a 0.05 significance level to test the claim that seat belts are effective in reducing fatalities. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of occupants not wearing seat belts and the second sample to be the sample of occupants wearing seat belts. What are the null and alternative hypotheses for the hypothesis test? OA Ho: P1 P₂1 H₁: P₁ P₂ OD. Ho: P₁ P2 H₁: P₁ P₂ Identify the test statistic. z = 7.98 (Round to two decimal places as needed.) Identify the P-value. P-value= (Round to three decimal places as needed.) B. Ho: P1 P₂ H₁: P₁ P₂ m OE. Ho: P₁ P2 H₁: P₁ P₂ OC. Ho: P₁ P₂ H₁: P₁ P₂ OF. Ho: Pq SP₂ H₁: P₁ P₂
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
Related questions
Question
![K
A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2740 occupants not wearing seat belts, 38 were killed. Among 7645 occupants wearing seat belts, 12
were killed. Use a 0.05 significance level to test the claim that seat belts are effective in reducing fatalities. Complete parts (a) through (c) below.
@
2
a. Test the claim using a hypothesis test.
Consider the first sample to be the sample of occupants not wearing seat belts and the second sample to be the sample of occupants wearing seat belts. What are the null and alternative
hypotheses for the hypothesis test?
W
S
View an example Get more help.
OA. Ho: P₁ P₂
H₁: P₁ = P₂
OD. Ho: P₁ P2
H₁: P₁ <P₂
Identify the test statistic.
z = 7.98
(Round to two decimal places as needed.)
Identify the P-value.
mmand
P-value=
(Round to three decimal places as needed.)
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#
3
80
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E
D
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4
a
R
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5
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6
B
B. Ho: P1 P2
H₁: P₁ P₂
OE. Ho: P₁ P2
H₁: P₁ P₂
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OC. Ho: P₁ P₂
H₁: P₁ P₂
OF. Ho: P₁ P₂
H₁: P₁ P₂
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;
Clear all
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11
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Final check
F12
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Transcribed Image Text:K
A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2740 occupants not wearing seat belts, 38 were killed. Among 7645 occupants wearing seat belts, 12
were killed. Use a 0.05 significance level to test the claim that seat belts are effective in reducing fatalities. Complete parts (a) through (c) below.
@
2
a. Test the claim using a hypothesis test.
Consider the first sample to be the sample of occupants not wearing seat belts and the second sample to be the sample of occupants wearing seat belts. What are the null and alternative
hypotheses for the hypothesis test?
W
S
View an example Get more help.
OA. Ho: P₁ P₂
H₁: P₁ = P₂
OD. Ho: P₁ P2
H₁: P₁ <P₂
Identify the test statistic.
z = 7.98
(Round to two decimal places as needed.)
Identify the P-value.
mmand
P-value=
(Round to three decimal places as needed.)
X
to
#
3
80
F3
E
D
C
$
4
a
R
F
%
ла
5
V
&
F5
T
G
6
B
B. Ho: P1 P2
H₁: P₁ P₂
OE. Ho: P₁ P2
H₁: P₁ P₂
MacBook Air
C
FO
Y
H
&
7
N
44
U
...
J
00 *
8
DII
FB
M
I
(
9
K
DD
F9
O
<
H
I
OC. Ho: P₁ P₂
H₁: P₁ P₂
OF. Ho: P₁ P₂
H₁: P₁ P₂
)
O
F10
P
니
L
>
-
:
;
Clear all
F11
I
command option
{
[
+
?
=
1
11
1
Final check
F12
}
]
delete
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