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      01-30-2012, 02:36 PM   #6
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Originally Posted by scorcherjf
How are you even measuring the null hypothesis? Do you have a way to measure exactly what percentage of bacteria is killed per sample?
Originally Posted by ideliver View Post
80% probabilty to reject the null hypothesis...i am embarrased that I can't do this...i appreciate the effort!!

The hypothesis is that it kills 99.9% of bacteria, so I would except no growth on the treatment group.

But, we can go to the lab and do colony counts if needed. The microbiology part is easy.

I was trying to do three things at once last night and was hoping that someone could get this easily.

I just need the sample size to figure out how many petri dishes to get.
Cars I've owned '76 Chevelle 350 RIP '82 Monte Carlo 350 RIP '82 Mustang 302 RIP '88 Honda CRX RIP '88 Olds Toronado sold '94 Toyota Tercel sold '99 Acura TL sold 2002 Porsche 911 sold 2003 E46 M3 Blk/gr 2006 MB S430 sold Current: 2008 Infiniti QX56 & 2008 E60 M5