Salary information regarding two independent random samples of male and female employees of a large company is shown below. MaleFemaleSample size 6425Sample mean salary (in $1000s) 4742Population variance12850The standard error for the difference between the two means isA) 9.19B)4C)2.0D)3.91

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Math

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The standard error for the difference between the two means is A) 9.19 B)4 C)2.0 D)3.91

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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Question

100%

Salary information regarding two independent random samples of male and female employees of a large company is shown below.

	Male	Female
Sample size	64	25
Sample mean salary (in $1000s)	47	42
Population variance	128	50

The standard error for the difference between the two means is

A) 9.19

B)4

C)2.0

D)3.91

Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.

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