Chena804 Group Title Statistics Question: one year ago one year ago

1. EulerGroupie Group Title

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

2. EulerGroupie Group Title

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

3. EulerGroupie Group Title

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

4. EulerGroupie Group Title

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

5. Chena804 Group Title

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.

6. EulerGroupie Group Title

cool

7. EulerGroupie Group Title

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