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Samples of two different models of cars were selected, and the actual speed for each car was determined when the speedometer registered 50 mph. The resulting 95% confidence intervals for true mean actual speed were (51.7, 53.1) and (49.6, 50.8). Assuming that the two sample standard deviations are equal, which confidence interval is based on the larger sample size? (51.7, 53.1) or (49.6, 50.8)       Explain your reasoning. As the sample size increases, the width of the interval decreases. As the sample size increases, the width of the interval increases.

Samples of two different models of cars were selected, and the actual speed for each car was determined when the speedometer registered 50 mph. The resulting 95% confidence intervals for true mean actual speed were (51.7, 53.1) and (49.6, 50.8). Assuming that the two sample standard deviations are equal, which confidence interval is based on the larger sample size? (51.7, 53.1) or (49.6, 50.8)       Explain your reasoning. As the sample size increases, the width of the interval decreases. As the sample size increases, the width of the interval increases.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Samples of two different models of cars were selected, and the actual speed for each car was determined when the speedometer registered 50 mph. The resulting 95% confidence intervals for true mean actual speed were (51.7, 53.1) and (49.6, 50.8). Assuming that the two sample standard deviations are equal, which confidence interval is based on the larger sample size?
(51.7, 53.1) or (49.6, 50.8)    
 
Explain your reasoning.
As the sample size increases, the width of the interval decreases.
As the sample size increases, the width of the interval increases.    
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