Men women boys girls total survived 332 318 29 27 706 died...

Name: men women boys girls total survived 332 318 29 27 706 died 1360 104 35 18 1514 total 1692 422 64 45 2223 suppose there were 2223 people on the titanic before it sunk and the contingency tabl 87491
Uploaded: 2021-10-08T08:02:47-08:00
Duration: 4 min 42 s
Channel: Juan Nicolás
Description: men women boys girls total survived 332 318 29 27 706 died 1360 104 35 18 1514 total 1692 422 64 45 2223 suppose there were 2223 people on the titanic before it sunk and the contingency tabl 87491

Men Women Boys Girls TOTAL Survived 332 318 29 27 706 Died 1360 104 35 18 1514 TOTAL 1692 422 64 45 2223 Suppose there were 2,223 people on the Titanic before it sunk and the contingency table above describes what happened to each category of people.

Transcript

00:01 Hello, so i'm going to answer your question about probabilities and a specific case in the application of titanic case.

00:10 For doing so first, i sketch the table and then i start answering your question.

00:14 In this case, i have two divided because i have to apply a different logic in each question.

00:19 For the first question, where is the probability of a passenger that is a woman or there is a survivor? so for doing double accountability, first i calculate the probability of a death woman.

00:32 To be found so this would be 104 over the total of cases 200, 2025 and then i added the probability of being a survivor that would be 706 so as you can see these are the individual probabilities then i added and then i just calculate the ratio so it's 0 .36 .4 then the question is what is a probability there is a man and a survivor so in this case is this specific column, this specific cell, because you want to be the both conditions and then i divide that overall the population.

01:12 The result is 0 .1492.

01:15 And the question that is that if it's a boy or a girl, in this case i need to add 29 and 35 because i want to know if it's a boy, even though it's death or alive, the same case for women, for girls, sorry.

01:28 So it's 29 plus 35 and 27 plus 18.

01:32 This gives me a probability, the next to the same.

01:34 I added and then i find the proportion.

01:37 Then what is the probability there is a death man? so in this case there have to be a condition because they said the probability that first they find someone that is dead.

01:46 So i'll calculate the probability of fighting someone dead.

01:50 Then they tell you that that that the passenger was a man.

01:55 So then i have to calculate the probability of being a man between the death people.

02:00 So this would be the probability of being a man.

02:04 While the passenger was dead.

02:06 Then i multiply both conditions, understand what is the probability that both situations happens, and this would be the final result, 0 .61...