In the past, the average length of an outgoing telephone call from a business office has been 146 seconds. A manager wishes to check whether that average has decreased after the introduction of policy changes. A sample of 100 telephone calls produced a mean of 143 seconds, with a standard deviation of 28 seconds. Perform the relevant test at the 0.05 level of significance.

In the past, the average length of an outgoing telephone call from a business office has been 146 seconds. A manager wishes to check whether that average has decreased after the introduction of policy changes. A sample of 100 telephone calls produced a mean of 143 seconds, with a standard deviation of 28 seconds. Perform the relevant test at the 0.05 level of significance.

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Description: 4) In the past, the average length of an outgoing telephone callfrom a business office has been 146 seconds. A manager wishesto check whether that average has decreased after theintroduction of policy changes. A sample of 100 telephone callsproduced

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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