simple random sample of front-seat occupants involved in car crashes is obtained. Among 2976 occupants not wearing seat belts, 33 were killed. Among 7813 occupants wearing seat belts, 10 were killed. Use a 0.01 significance level to test the claim that seat belts are effective in reducing fatalities. a. Identify the test statistic. z equals (Round to two decimal places as needed.) b. Identify the P-value.
simple random sample of front-seat occupants involved in car crashes is obtained. Among 2976 occupants not wearing seat belts, 33 were killed. Among 7813 occupants wearing seat belts, 10 were killed. Use a 0.01 significance level to test the claim that seat belts are effective in reducing fatalities. a. Identify the test statistic. z equals (Round to two decimal places as needed.) b. Identify the P-value.
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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A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2976 occupants not wearing seat belts, 33 were killed. Among 7813 occupants wearing seat belts, 10 were killed. Use a 0.01 significance level to test the claim that seat belts are effective in reducing fatalities.
a. Identify the test statistic.
z equals
(Round to two decimal places as needed.)
b. Identify the P-value.
P-value equals
(Round to three decimal places as needed.)
c.
Test the claim by constructing an appropriate confidence interval. The appropriate confidence interval is
less than left parenthesis p 1 minus p 2 right parenthesis less than
(Round to three decimal places as needed.)
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