Mathematics, 04.02.2020 01:51 destinydiamond6887

If two cards are drawn without replacement from a deck, find the probability that the second card is a spade, given that the first card was a spade.

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There are 13 spades in a standard deck of cards, so if the first one is a spade, there are 12 spades left.

So the chances of getting another one would be 12/52 because there are 52 cards in a standard deck of cards.

Reduced, your answer is 3/13

Answer from: StephanieQueen2003

We have 13 spades in a standard pack of cards.
Let's take cases.
Case 1: First card -- spade
Our sampling space is 52 cards, it isn't changed because we still haven't drawn anything.

Taken that it's a spade, our sampling space is reduced because it is dependent of our first event.

Case 2: Second card -- spade
Given that we don't replace the card, the second card is dependent of the first card. If we pick up a spade on the first draw, we have 51 cards to choose 12 spades.

(ie 4/17)

Answer from: Quest

1/2*qr*rs

step-by-step explanation:

Answer from: Quest

step-by-step explanation:

i found the life tables for the year 2012.

life table of males at age 30. probability of dying between ages x and x+1

total population:

29–30 . . . . . . . . . . . . 0.001030

30–31 . . . . . . . . . . . . 0.001061

males:

29–30 . . . . . . . . . . . . 0.001420

30–31 . . . . . . . . . . . . 0.001448

white population

29–30 . . . . . . . . . . . . 0.001005

30–31 . . . . . . . . . . . . 0.001037

white males

29–30 . . . . . . . . . . . . 0.001372

30–31 . . . . . . . . . . . . 0.001399

non hispanic white population

29–30 . . . . . . . . . . . . 0.001083

30–31 . . . . . . . . . . . . 0.001116

non hispanic white males

29–30 . . . . . . . . . . . . 0.001477

30–31 . . . . . . . . . . . . 0.001503

jacob, non hispanic white male. 30 years old.

probability that jacob lives to be 30 years old.

since the given probabilities are probabilities of dying, i think we simply subtract it from 1 to get the probability of living. we will use the probability of non hispanic white male.

probability of living to be 30 y.o.

29 - 30 : 1 - 0.001477 = 0.998523

30 - 31 : 1 - 0.001503 = 0.998497

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