Need help in Bio p5

[Xam]

hey plz can any explain these questions:
help!!!!
oct 07 q3 how do we get E? n no of freedom?
oct 08 q2 b.ii n iv
may 09 q1 b whole
2010 Onv variant 53 question 1 part C (i) plz how will we find "n"????

what happens when T<critical value????

PLZ ANSWER THESE QUESTIONS PLZ PLZ PLZ PLZ!!!!

 

[Xam]

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[Sweet_angel]

oct/nov 2007
q.3. we have got the value of E by taking the avg. of all the readings of O (i.e. (36+90+114)/3 = 80) and for degree of freedom it is ( no of classes of data - 1 ) so here we have 3 different classes and den -1 (according to formula) hence it is 3-1=2 so degree of freedom is 2
may/june 2009
q.1 (b) (ii) by measuring the average distance moved by the dye and den dividing it by average time taken
(iii) they have used respiratory inhibitor not transpiratory inhibitor so rate of water movement will be unchanged
(i) PROCEDURE : i'll post it soon.......
oct/nov2010/53
q.1.c.(i) we counted the no of samples to get the value of n i.e. for each type of sugar there are 3 samples at each count like for count 1 there are 3 samples , for count 2 there are three samples and so on......and no of counts are four so n = 4x3 =12



when t value is < critical value den it is completely by chance.......