biostatist

Group I

The blood groups of 200 people are distributed as follows: 50 have type A blood, 65 have B blood type, 70 have O blood type and 15 have type AB blood. If a person from this group is selected at random, what is the probability that this person has O blood type?

Group II

A s result of responses when a sample of adults in three cities was asked on health services. The responses are shown in following table:

Baghdad

Basrah
Missan
Total
Good
100
150
150
400
Bad
125
130
95
350
Undecided
75
170
5
250
Total
300
450
250
1000


Find:
P (good)
P (Baghdad)
P (Missan)
P (Bad from Basrah)

Group III

From table below, calculate
1- the probability that child with hay fever will has eczema
2- the probability that child with eczema will has hay fever

Eczema

Hay fever
Total
Total

Yes
No

Yes
141
420
561
No
928
13525
14453
Total
1069
13945
15522


Group IV
Two parents each carry the same recessive gene which may each transmit to their child with probability 0.5. If their child will develop clinical disease if it inherits the gene from both parents and will be a carrier it inherits the gene from one parents only, then
The probability that their next child will have clinical disease is 0.25
The probability that two successive children will both develop clinical disease is 0.25 X 0.25
Group V
Two parents each carry the same recessive gene which may each transmit to their child with probability 0.5. If their child will develop clinical disease if it inherits the gene from both parents and will be a carrier it inherits the gene from one parents only, then
The probability their next child will be a carrier without clinical disease is 0.5
The probability of a child being a carrier or having clinical disease is o.75