For a population with a standard deviation of  = 20, how large a sample is necessary to have a standard error that is: A. Less than or equal to 5 points? B. Less than or equal to 2 points? C. Less than or equal to 1 points

For a population with a standard deviation of  = 20, how large a sample is necessary to have a standard error that is: A. Less than or equal to 5 points? B. Less than or equal to 2 points? C. Less than or equal to 1 points

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

3. For a population with a standard deviation of  = 20, how large a sample is
necessary to have a standard error that is:
A. Less than or equal to 5 points?
B. Less than or equal to 2 points?
C. Less than or equal to 1 points

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