Please explain Accident victims are sometimes taken from th

Please explain :)

Accident victims are sometimes taken from the scene of the accident by helicopter to the hospital.

But does this help save lives? Consider the following hypothetical data regarding the survival rate of accident victims broken down by seriousness of the accident and the method of transport to the hospital (helicopter versus road).

Method of Transport

Helicopter

Road

Serious

Less Serious

Serious

Less Serious

Victim died

48

16

60

200

Victim survived

52

84

40

800

Total

100

100

100

1,000

1/ What percentage of accident victims transported by helicopter died?

2/ What percentage of accident victims transported by road died?

3/ Which method of transport appears to be better?

4/ What percentage of victims of serious accidents transported by helicopter died?

5/ What percentage of victims of serious accidents transported by road died?

6/ What percentage of victims of less serious accidents transported by helicopter died?

7/ What percentage of victims of less serious accidents transported by road died?

8/ When broken down by seriousness of the accident, which method of transport appears to be better?

Method of Transport
	Helicopter	Road
Serious	Less Serious	Serious	Less Serious
Victim died	48	16	60	200
Victim survived	52	84	40	800
Total	100	100	100	1,000

Solution

Percent died 1 Accident victims transported by helicopter 64/2 = 32 2 Accident victims transported byRoad 260/1100 = 0.2363 3 Better transport Road as percent of death is less 4 Accident of serious victims transported by helicopter 48 5 Accident of serious victims transported by road 60 6 Accident of less serious victims transported by helicopter 16 7 Accident of less serious victims transported by road 20 8 For serious cases Helicoper is better For less serious cases Road is better