It's proposed that the average life expectancy these days is72.4, but recent data suggests it might be different fromthat.A sample size of 82 countries found a sample mean lifeexpectancy of 74 years with a standard deviation of 20.2years.You want to formulate and test a hypothesis that can be usedto challenge the validity of the claim at a significance levelof 0.10.:With hypotheses Ho: μ = 72.4 vs H₁ μ ‡ 72.4, whatis/are the critical value(s)? (Report answer accurate to 2decimal places.)What is the test statistic for this sample?(Report answer accurate to 3 decimal places.)What is the p-value for this sample?(Report answer accurate to 4 decimal places.)Our decision is toreject the nullaccept the nullfail to reject the nullAs such, the final conclusion is thatthere is sufficient evidence to conclude that thepopulation mean life expectancy is equal to 72.4.there is not sufficient evidence to conclude that thepopulation mean life expectancy is equal to 72.4.there is sufficient evidence to conclude that thepopulation mean life expectancy is not equal to 72.4.there is not sufficient evidence to conclude that thepopulation mean life expectancy is not equal to 72.4.

sample size(n)=82 Mean(x)=74 standard deviation(s)=20.2 significance level(α)=0.10 The null and…

Answered: It's proposed that the average life…

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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You wish to test the following claim (HaHa) at a significance level of α=0.005α=0.005.      Ho:μ=64.1      Ha:μ<64.1You believe the population is normally distributed, but you do not know the standard deviation. You obtain the following sample of data: data 57.4 51.3 60.9 39.5 56.5 What is the test statistic for this sample? (Report answer accurate to three decimal places.)test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.)p-value = The p-value is... less than (or equal to) αα greater than αα This test statistic leads to a decision to... reject the null accept the null fail to reject the null As such, the final conclusion is that... The sample data support the claim that the population mean is less than 64.1. There is not sufficient sample evidence to support the claim that the population mean is less than 64.1.
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