Answered: Being as specific as you can, which of…

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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10. Sample data, sample size, the confidence level, and the confidence interval

You are a member of a team studying the automobile industry. One phase of your investigation is to develop an interval estimate of the average distance that automobile-parts suppliers are located from Detroit. The population standard deviation σ is known.

You select a random sample, your teammate selects her own random sample with a larger sample size than yours, and you both choose the same confidence level.

Think about plotting both your interval estimate and your teammate’s interval estimate on a number line and then comparing where they sit and their widths.

Being as specific as you can, which of the following statements best describes where the intervals sit on the number line?

Your teammate’s interval is centered at a higher value than yours.

They are centered at the same value.

Your teammate’s interval is centered at a lower value than yours.

They are centered at different values.

Being as specific as you can, which of the following statements best describes the widths of the two intervals?

They are the same width.

Your teammate’s interval is wider than yours.

Your teammate’s interval is narrower than yours.

They are not the same width.

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