3 years ago

The _______ of an observation is determined by how far the values of the independent variables are from their means.

Mathematics

1 answer:

stira [4]3 years ago

7 0

Answer:

The leverage of an observation is determined by how far the values of the independent variables are from their means.

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Step-by-step explanation:

The formula to find the minimum sample size(n) , if the prior population proportion is unknown:

$n=0.25(\dfrac{z^c}{E})^2$ , where E = margin of error , $z^c$ = critical z-value for confidence level c.

Given : E = 0.04

Z-value for 95% confidence = 1.96

So, the minimum sample size required = $0.25(\dfrac{1.96}{0.04})^2=0.25(49)^2$

$= 0.25\times 2401=600.25\approx601$

Hence, the minimum sample size required = 601

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