Medical researchers have developed a new artificial heart constructed primarily of titanium and plastic. The heart will last and operate almostindefinitely once it is implanted in the patient's body, but the battery pack needs to be recharged about every four hours. A random sample of 50battery packs is selected and subjected to a life test. The average life of these batteries is 4.05 hours. Assume that battery life is normallydistributed with standard deviation o= 0.2 hour. Is there evidence to support the claim that mean battery life exceeds 4 hours? Use a= 0.05.What is the test statistic for the test? Answer rounded-off to 2 decimal places

Given that Sample size n =50 Sample mean =4.05 Population standard deviation =0.2

Answered: Medical researchers have devel…

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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Medical researchers have devel indefinitely once it is implanted in battery packs is selected and su distributed with standard deviatic What is the test statistic for the t