We use the following formula to calculate both the parts
Given 2 events A, B
The probability of A or B is
a) First we calculate
If a name is randomly selected from the passenger manifest of the Titanic, the probability of selecting a survivor is
If a name is randomly selected from the passenger manifest of the Titanic, the probability of selecting a girl is
If a name is randomly selected from the passenger manifest of the Titanic, the probability of selecting a survivor and a girl is
Now we can get the needed probability
If a name is randomly selected from the passenger manifest of the Titanic, the probability of selecting a survivor or a girl is
ans: 0.3257
b) We calculate the following
If a name is randomly selected from the passenger manifest of the Titanic, the probability of selecting someone who died is
If a name is randomly selected from the passenger manifest of the Titanic, the probability of selecting a girl is
If a name is randomly selected from the passenger manifest of the Titanic, the probability of selecting someone who died and a girl is
finally,
If a name is randomly selected from the passenger manifest of the Titanic, the probability of selecting someone who died or a girl is
ans: 0.6946
i know there are many quesitons with answers that looks like this one, but i have...