What is the ChiSquare value for the dominant phentotype of the cross Purple versus White. Should the answers be 696.75 or 696?? Neither are correcct
Parental Phenotypes
Purple X White
F1 Phenotype
All Purple
F2 Phenotype
705 purple, 224 white
I must be missing something:
Observed Purple=705
Observed White= 224
Total 929
Expected for Purple 705/929=.75
.75x929= 696.75 Purple Expected
Expected White 224/929=.24
.24 x 929= 222.96 White Expected
Second part of the question is
What is the Chi Square Sum (rounding to 3 significant figures) for Purple versus White cross. 0.391 How did they get 0.391?
But when I try to get this answer I use the formula (O-E)^2/E and get .09768 for Purple and .0048 for White which equals .1085
Third part of the question:
Using the following web site: (http://www.graphpad.com/quickcalcs/PValue1.cfm)
What is the P-value (rounding to 3 significant figures) for Purple versus White cross.