If the population standard deviation is 10 , how large a sample is necessary to have a standard error that is

1 answer:

5 0

The standard error given a population standard deviation of $\sigma$ is $\dfrac\sigma{\sqrt n}$ . So if the desired standard error is $s$ , then

$s=\dfrac\sigma{\sqrt n}\implies \sqrt n=\dfrac\sigma s\imlies n=\dfrac{\sigma^2}{s^2}$

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Step-by-step explanation:

Given as :

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