# Thread: finite math help.. problem solving

1. ## finite math help.. problem solving

Consider the following table that categorizes the injuries that occured in one season in a particular hockey league. The table shows which injuries happened to someone wearing a half face shield versus a full face shield.

H=Half shield
F=Full Shield
T=Totals

(H) (F) (T)
Head or face injury only (A) 95 34 129
Neck injury only (B) 41 38 79
Body injury only (C) 9 7 16
Multiple injuries 202 150 352
Totals 347 229 576

(a) Calculate the probability that a randomly selected injured person from those represented in the table had only a neck injury.
(b) What is the probability that an injury that occurred to someone wearing a full shield resulted in only a neck injury?
(c) Determine whether the events F and B (as shown in the table) are independent.

would a) be the total injuries choose neck injuries?

is my thinking right here? then B would be fullshield neck injury from the total??

2. Originally Posted by davidbooth
Consider the following table that categorizes the injuries that occured in one season in a particular hockey league. The table shows which injuries happened to someone wearing a half face shield versus a full face shield.

H=Half shield
F=Full Shield
T=Totals

(H) (F) (T)

Head or face injury only (A) 95 34 129
Neck injury only (B) 41 38 79
Body injury only (C) 9 7 16
Multiple injuries 202 150 352

Totals 347 229 576

(a) Calculate the probability that a randomly selected injured person from those represented in the table had only a neck injury.
(b) What is the probability that an injury that occurred to someone wearing a full shield resulted in only a neck injury?
(c) Determine whether the events F and B (as shown in the table) are independent.

would a) be the total injuries choose neck injuries?

is my thinking right here? then B would be fullshield neck injury from the total??
a) (total number of neck only)/(total number of injuries)=79/576

.

3. hi. i have the same question to do and i dont understand how to start or do any of it. please help!