Question

Statistics Question:

Answer 1

I'm a little weak on stats... but
\[z=\frac{x-50}{10}\]

Answer 2

look up .2 in a z table... the closest I get is 0.2005 is z=-.08

Answer 3

\[-.8=\frac{x-50}{10}\]so x=42 dB and below.

Answer 4

But, as I said... this is a weak subject for me.

Answer 5

That's fine I will test it out thank you for the help though. I have been stuck on this stuff for a while but now I have a better idea on it.

Answer 6

cool

Answer 7

oops... 0.2005 gets z=-0.8.... same result