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mr Goodwill [35]

2 years ago

12

What is a biased sample?

1 answer:

Kruka [31]2 years ago

3 0

A sample in which every person or object does not have an equal chance of being selected. (Mark as brainliest)

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If y=1/2 when x=2, find y when x=3, given that y varies directly with x

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$\bf \qquad \qquad \textit{direct proportional variation}\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad y=kx\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------\\\\
\textit{we also know that }
\begin{cases}
y=\frac{1}{2}\\
x=2
\end{cases}\implies \cfrac{1}{2}=k2\implies \cfrac{1}{4}=k
\\\\\\
\boxed{y=\cfrac{1}{4}x}
\\\\\\
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