In July 2004, Gallup Poll asked 1005 US adults if they actively try to avoid carbohydrates in their diet. That number increased to 27% from 20% in a similar 2002 poll. Has the proportion changed? Which test should you use? A t-test for means B z-test for proportions C 2-sample test for proportions D matched pairs E z-test for means F 2-sample test for means
In July 2004, Gallup Poll asked 1005 US adults if they actively try to avoid carbohydrates in their diet. That number increased to 27% from 20% in a similar 2002 poll. Has the proportion changed? Which test should you use? A t-test for means B z-test for proportions C 2-sample test for proportions D matched pairs E z-test for means F 2-sample test for means
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 4E
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In July 2004, Gallup Poll asked 1005 US adults if they actively try to avoid carbohydrates in their diet. That number increased to 27% from 20% in a similar 2002 poll. Has the proportion changed? Which test should you use?
A
t-test for means
B
z-test for proportions
C
2-sample test for proportions
D
matched pairs
E
z-test for means
F
2-sample test for means
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