Answer:
AB
Step-by-step explanation:
If blood type is independent of gender then we must have for each blood type 50% males and 50% females
Let us compare with this view each blood type
A
Observed 105 93 198 105 93 198
Expected 99 99 198 99 99 198
(O-E)^2 36 36 72
(O-E)^2/E 0.363636364 0.363636364 0.727272727
B
Observed 105 93 198 99 84 183
Expected 99 99 198 91.5 91.5 183
(O-E)^2 56.25 56.25 112.5
(O-E)^2/E 0.614754098 0.614754098 1.229508197
AB
Observed 15 18 33
Expected 16.5 16.5 33
(O-E)^2 2.25 2.25 4.5
(O-E)^2/E 0.136363636 0.136363636 0.272727273
O
Observed 160 140 300
Expected 150 150 300
(O-E)^2 100 100 200
(O-E)^2/E 0.666666667 0.666666667 1.333333333
We find that the deviations are the least for blood group AB
So AB blood group is independent of gender
1. x=-8
2.x=2
3.x=-13
4. I need to see the rest of number 4
If you choose to become an architect, then you will need it all the time. You would need to find the area of the floors, walls, etc. which will almost always be composite figures.
If we need 2 pounds of apples to make 5 apple pies, then we need 8 apples to make 20 apple pies. It's because:
20 apples / 5 apple pies = 4
4 * 2 pounds = 8 pounds
Hope this helps!