A simple random sample of front seat occupants involved in car crashes is obtained. Among 2780 occupants not wearing seat belts, 37 were killed. Among 7731 occupants wearing seat belts, 15 were killed. Use a 0.05 significance level to test the claim that seat belts are effective in reducing fatalities. (a) Test the claim using a hypothesis test. Ho: P1 = P2 H1: Choose one of the following letter_ A: P1 = P2; B: P1 > P2; C: P1 < P2 D: P1 # p2 (b) Identify the test statistic. z test = 7.33 (Round to two decimal places.) (c) Identify the P-value. Conclusion p-value is 0.000 (Round to three decimal places.) since p-value is [ less than , or greater than) s.f.0.05 so Reject (Reject / Fail to reiect)
A simple random sample of front seat occupants involved in car crashes is obtained. Among 2780 occupants not wearing seat belts, 37 were killed. Among 7731 occupants wearing seat belts, 15 were killed. Use a 0.05 significance level to test the claim that seat belts are effective in reducing fatalities. (a) Test the claim using a hypothesis test. Ho: P1 = P2 H1: Choose one of the following letter_ A: P1 = P2; B: P1 > P2; C: P1 < P2 D: P1 # p2 (b) Identify the test statistic. z test = 7.33 (Round to two decimal places.) (c) Identify the P-value. Conclusion p-value is 0.000 (Round to three decimal places.) since p-value is [ less than , or greater than) s.f.0.05 so Reject (Reject / Fail to reiect)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Part D round to 3 decimal places
Transcribed Image Text:A simple random sample of front seat occupants involved in car crashes is obtained. Among 2780 occupants
not wearing seat belts, 37 were killed. Among
7731 occupants wearing seat belts, 15 were killed. Use a 0.05 significance level to test the claim that seat
belts are effective in reducing fatalities.
(a) Test the claim using a hypothesis test.
Ho: P1 P2
H1:
Choose one of the following letter_
A: Pi = P2:
B: P1 > P2:
C: p1 < P2
D: P1 + P2
(b) Identify the test statistic.
7.33
z test =
(Round to two decimal places.)
%3D
(c) Identify the P-value. Conclusion
p-value is 0.000
(Round to three decimal places.)
since p-value is [ less than, or greater than) s.f.0.05 so Reject
( Reject / Fail to
reject. )
(d) Test the claim by constructing an appropriate confidence interval.
< Pi – P2 <
(Round to three decimal places.)
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