Answer:
y=x+ an unknown
Hence we are missing the b
y=5 x = 0
So: 5=0+b
So y=x+5
<em><u>We</u></em><em><u> </u></em><em><u>were</u></em><em><u> </u></em><em><u>missing</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>y</u></em><em><u> </u></em><em><u>intercept</u></em><em><u> </u></em><em><u>which</u></em><em><u> </u></em><em><u>occurs</u></em><em><u> </u></em><em><u>at</u></em><em><u> </u></em><em><u>x</u></em><em><u>=</u></em><em><u>0</u></em><em><u> </u></em>
Answer:
A sample is random when all subjects have an equal opportunity of being chosen, no discrimination and nothing favoured over the other.