Athletes performing in bright sunlight often smear black eye grease under their eyes to reduce glare. Does eye grease work? In one study, 1616 student subjects took a test of sensitivity to contrast after three hours facing into bright sun, both with and without eye grease. (Greater sensitivity to contrast improves vision, and glare reduces sensitivity to contrast.) This is a matched pairs design. The differences in sensitivity, with eye grease minus without eye grease, are given in the table. 0.07 0.64 −0.12 −0.05 −0.18 0.14 −0.16 0.03 0.050 0.020.02 0.43 0.24 −0.11 0.28 0.05 0.29 Click to download the data in your preferred format. How much more sensitive to contrast are athletes with eye grease than without eye grease? Give a 9 confidence interval to answer this question. Give your answers to four decimal places. lower bound:
Athletes performing in bright sunlight often smear black eye grease under their eyes to reduce glare. Does eye grease work? In one study, 1616 student subjects took a test of sensitivity to contrast after three hours facing into bright sun, both with and without eye grease. (Greater sensitivity to contrast improves vision, and glare reduces sensitivity to contrast.) This is a matched pairs design. The differences in sensitivity, with eye grease minus without eye grease, are given in the table. 0.07 0.64 −0.12 −0.05 −0.18 0.14 −0.16 0.03 0.050 0.020.02 0.43 0.24 −0.11 0.28 0.05 0.29 Click to download the data in your preferred format. How much more sensitive to contrast are athletes with eye grease than without eye grease? Give a 9 confidence interval to answer this question. Give your answers to four decimal places. lower bound:
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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Athletes performing in bright sunlight often smear black eye grease under their eyes to reduce glare. Does eye grease work? In one study, 1616 student subjects took a test of sensitivity to contrast after three hours facing into bright sun, both with and without eye grease. (Greater sensitivity to contrast improves vision, and glare reduces sensitivity to contrast.) This is a matched pairs design. The differences in sensitivity, with eye grease minus without eye grease, are given in the table.
| 0.07 | 0.64 | −0.12 | −0.05 | −0.18 | 0.14 | −0.16 | 0.03 |
| 0.050 | 0.020.02 | 0.43 | 0.24 | −0.11 | 0.28 | 0.05 | 0.29 |
Click to download the data in your preferred format.
How much more sensitive to contrast are athletes with eye grease than without eye grease? Give a 9 confidence interval to answer this question. Give your answers to four decimal places.
lower bound:
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