waited, on average, 18 days with standard deviation 9 days. What kind of a test should CCN perform? z-interval to estimate the difference in two proportions t-interval to estimate the difference in two means Chi-square test for association t-test for the difference in two means -test for the difforongo in

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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The Cardiac Care Network in Ontario, Canada, wants to determine whether the wait for by-
pass surgery is longer than the wait for angiography. A sample of 539 bypass patients waited,
on average, 19 days with standard deviation 10 days; a sample of 847 angiography patients
waited, on average, 18 days with standard deviation 9 days. What kind of a test should CCN
perform?
z-interval to estimate the difference in two proportions
t-interval to estimate the difference in two means
Chi-square test for association
t-test for the difference in two means
z-test for the difference in two proportions
ANOVA
Transcribed Image Text:The Cardiac Care Network in Ontario, Canada, wants to determine whether the wait for by- pass surgery is longer than the wait for angiography. A sample of 539 bypass patients waited, on average, 19 days with standard deviation 10 days; a sample of 847 angiography patients waited, on average, 18 days with standard deviation 9 days. What kind of a test should CCN perform? z-interval to estimate the difference in two proportions t-interval to estimate the difference in two means Chi-square test for association t-test for the difference in two means z-test for the difference in two proportions ANOVA
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