What is the ChiSquare value for the dominant phentotype of the cross Purple versus White. Should the answers be696.75 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.0.391How 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.