MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Suppose \( \mu_1 \) and \( \mu_2 \) are true mean stopping distances at 50 mph for cars of a certain type equipped with two different types of braking systems. The data follows: \( m = 9 \), \( \bar{x} = 113.5 \), \( s_1 = 5.08 \), \( n = 9 \), \( \bar{y} = 129.7 \), and \( s_2 = 5.34 \).

Calculate a 95% CI for the difference between true average stopping distances for cars equipped with system 1 and cars equipped with system 2. (Round your answers to two decimal places.)

There is an orange button labeled "USE SALT."

There are two text boxes with values: \((-22.73, -10.12)\), each followed by a red "X."
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Transcribed Image Text:Suppose \( \mu_1 \) and \( \mu_2 \) are true mean stopping distances at 50 mph for cars of a certain type equipped with two different types of braking systems. The data follows: \( m = 9 \), \( \bar{x} = 113.5 \), \( s_1 = 5.08 \), \( n = 9 \), \( \bar{y} = 129.7 \), and \( s_2 = 5.34 \). Calculate a 95% CI for the difference between true average stopping distances for cars equipped with system 1 and cars equipped with system 2. (Round your answers to two decimal places.) There is an orange button labeled "USE SALT." There are two text boxes with values: \((-22.73, -10.12)\), each followed by a red "X."
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