The population mean ACT composite score in 2015 was 20.8 points, with population standard deviation 5.6 points. The population size of number of tests taken in 2018 is extremely large (more than 1 million). Consider all samples of size 40 tests.

The population mean ACT composite score in 2015 was 20.8 points, with population standard deviation 5.6 points. The population size of number of tests taken in 2018 is extremely large (more than 1 million). Consider all samples of size 40 tests.

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

The population mean ACT composite score in 2015 was 20.8 points, with population standard deviation 5.6 points.
The population size of number of tests taken in 2018 is extremely large (more than 1 million).
Consider all samples of size 40 tests.

Consider all samples of size 40.
Find the standard deviation (standard error) of the distribution of sample means for samples of size
40.
State your answer with 3 decimal places.

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