Katy is interested to understand the of herd immunity concept for Singapore's COVID-19 cases. She noted that95% of adult population in Singapore's is fully vaccinated by the end of October 2021. She want to comparedifference of COVID-19 death cases in Singapore's before Singapore's achieve herd immunity and afterSingapore's achieve herd immunity. She collects the data of death cases in Singapore's two weeks in the earlyof October 2021 (to represent before herd immunity) and two weeks in the end of November 2021 (to representafter herd immunity). Assume the variable is approximately normally distributed. The data are presented asbelow.Before herd immunityAfter herd immunity121109118761171051325340685545412478746493103688863473748454029a) What test is appropriate to be used in this question? State why.b) Find sample mean and sample standard deviation of the above data.c) Can Katy concluded that the before herd immunity death cases is lower than the after herd immunity deathcases. Test the claim at a = 0.10.d) Find 98% confidence interval of the difference in means.

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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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