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the minimum sample size n needed to estimate μ for the given values of​ c, σ​,

the minimum sample size n needed to estimate μ for the given values of​ c, σ​,

MATLAB: An Introduction with Applications
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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Find the minimum sample size n needed to estimate
μ
for the given values of​ c,
σ​,
and E.
 
c=0.95​,
σ=9.3​,
and
E=1
Assume that a preliminary sample has at least 30 members.
 
n= ?
Expert Solution
Step 1

The sample size can be calculated as:

n=z×σE2

Here,

c = desired confidence level

E = The allowable margin of error ( sampling error)

σ = Population standard deviation

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