7 32 True / False: comparing means. Determine if the following statements are true or false, and explainyour reasoning for statements you identify as false.(a) When comparing means of two samples where ni = 20 and n2 = 40, we can use the normal model forthe difference in means since n2 > 30.(b) As the degrees of freedom increases, the t-distribution approaches normality.(c) We use a pooled standard error for calculating the standard error of the difference between means whensample sizes of groups are equal to each other.

a) False Reason:Both the sample size should be greater than 30.b) True Reason:As per the Central Limit theorem as we increase the degree of freedom, the distribution approached normality.c) False Reason:Pooled standard deviation is used when the standard deviation for both populations are equal.

Math

Statistics

(a) When comparing means of two samples where nı = 20 and n2 = 40, we can use the normal model for the difference in means since n2 2 30. (b) As the degrees of freedom increases, the t-distribution approaches normality. We use a pooled standard error for calculating the standard error of the difference between means when sample sizes of groups are equal to each other.

(a) When comparing means of two samples where nı = 20 and n2 = 40, we can use the normal model for the difference in means since n2 2 30. (b) As the degrees of freedom increases, the t-distribution approaches normality. We use a pooled standard error for calculating the standard error of the difference between means when sample sizes of groups are equal to each other.

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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