Answered: Peggy constructed the 95 percent…

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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Question

Peggy constructed the 95 percent confidence interval (4.8,5.2)(4.8,5.2) to estimate the slope of a regression model for a set of bivariate data with 24 data values. Peggy claims that the width of the confidence interval will increase if a sample size of 30 is used, all other things remaining the same. Quincy claims that the width of the confidence interval will decrease if a sample size of 30 is used. Which statement is true about the claims made by Peggy and Quincy?

A)Peggy’s claim is correct.

B)Quincy’s claim is correct.
C)Both Peggy’s claim and Quincy’s claim are correct.
D)Neither Peggy’s claim nor Quincy’s claim is correct.
E)There is not enough information to determine whether the claims are correct.

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