Answered: According to one survey taken a few…

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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According to one survey taken a few years ago, 32% of American households have attempted to reduce their long-distance phone bills by switching long-distance companies. Suppose that business researchers want to test to determine if this figure is still accurate today by taking a new survey of 85 American households who have tried to reduce their long-distance bills. Suppose further that of these 85 households, 26% say they have tried to reduce their bills by switching long-distance companies. Is this result enough evidence to state that a significantly different proportion of American households are trying to reduce long-distance bills by switching companies? Let α = .01.

Appendix A Statistical Tables

(Round your answer to 2 decimal places.)

The value of the test statistic is enter the value of the test statistic and we choose between reject and fail to reject the null hypothesis .

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