Answered: Is there sufficient evidence to…

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

A report summarized the results of a survey of 306 U.S. businesses. Of these companies, 202 indicated that they monitor employees' web site visits. For purposes of this exercise, assume that it is reasonable to regard this sample as representative of businesses in the United States.

(a)

Is there sufficient evidence to conclude that more than 60% of U.S. businesses monitor employees' web site visits? Test the appropriate hypotheses using a significance level of 0.01.

Find the test statistic and P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.)

z	=
P-value	=

State your conclusion.

Reject H₀. We do not have convincing evidence that more than 60% of U.S. businesses monitor employees' web site visits.Reject H₀. We have convincing evidence that more than 60% of U.S. businesses monitor employees' web site visits. Fail to reject H₀. We have convincing evidence that more than 60% of U.S. businesses monitor employees' web site visits.Fail to reject H₀. We do not have convincing evidence that more than 60% of U.S. businesses monitor employees' web site visits.

(b)

Is there sufficient evidence to conclude that a majority of U.S. businesses monitor employees' web site visits? Test the appropriate hypotheses using a significance level of 0.01.

Find the test statistic and P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.)

z	=
P-value	=

State your conclusion.

Reject H₀. We do not have convincing evidence that a majority of U.S. businesses monitor employees' web site visits.Fail to reject H₀. We have convincing evidence that a majority of U.S. businesses monitor employees' web site visits. Reject H₀. We have convincing evidence that a majority of U.S. businesses monitor employees' web site visits.Fail to reject H₀. We do not have convincing evidence that a majority of U.S. businesses monitor employees' web site visits.

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