Dictionary » N » Null

Null

null

1. Something that has no force or meaning.

2. That which has no value; a cipher; zero.

(Science: physics) Null method, a zero method. See Zero.


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Do hESC actively produce telomerase?

Hello,  First excuse my background cause it's basically null.  I've read hIPSC have shorter telomere lengths than hESC. I understand this is due to hIPS coming from adult somatic cells but apparently hIPS don't naturally create telomerase, is this true? ...

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by oxi
Tue Feb 03, 2015 1:51 am
 
Forum: Cell Biology
Topic: Do hESC actively produce telomerase?
Replies: 3
Views: 465

Statistics - minitab - which test should i use?! please help

... baby boys and baby girls have different weight at birth. Researches selected 12 families with one son and one daughter. Formulate a suitable null hypothesis and alternative null hypothesis. This is what i came up with for the alternative: The mean weight of baby girls at birth is not lower ...

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by hb465
Mon Mar 17, 2014 12:19 am
 
Forum: General Discussion
Topic: Statistics - minitab - which test should i use?! please help
Replies: 1
Views: 1629

Home Work Question

... if taking this pill will make a difference to the reaction times of people doing an online reaction test. Select from the following matching null and experimental (alternative) hypotheses for Susan’s proposed experiment. Experimental (alternative) hypothesis .................................Null ...

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by zak
Tue Dec 10, 2013 12:08 pm
 
Forum: General Discussion
Topic: Home Work Question
Replies: 12
Views: 6870

Home Work Question

The working and null hypothesis must be the opposite (null hypothesis is used to test for rightness of the working hypothesis). Moreover, the null hypothesis must state there is no difference/effect http://en.wikipedia.org/wiki/Null_hypothesis ...

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by JackBean
Tue Dec 10, 2013 10:22 am
 
Forum: General Discussion
Topic: Home Work Question
Replies: 12
Views: 6870

Home Work Question

... from one end (dark) to the other (brightly lit). She needs to formulate matching hypotheses to test. From the list below select the matching null and experimental (alternative) hypotheses that she should use and drag them into the table. Experimental (alternative) hypothesis.............. ...

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by zak
Mon Dec 09, 2013 8:33 pm
 
Forum: General Discussion
Topic: Home Work Question
Replies: 12
Views: 6870
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