As shown above, a classic deck of cards is made up of 52 cards, 4 suits with clubs and spades black and diamonds and hearts red. There are 13 cards each suit: #2-10, jack, queen, king and ace. Picture (or face) cards are the jack, queen, and king. If you select a card at random, what is the probability of picking a(n) 3 of Hearts ?

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Chapter1: Combinatorial Analysis
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15. As shown above, a classic deck of cards is made up of 52 cards, 4 suits with clubs and spades black and diamonds and hearts red. There are 13 cards each suit: #2-10, jack, queen, king and ace. Picture (or face) cards are the jack, queen, and king.

If you select a card at random, what is the probability of picking a(n) 3 of Hearts ? 

 

16.

Giving a test to a group of students, the grades and gender are summarized below

  A B C Total
Male 3 12 15 30
Female 5 6 7 18
Total 8 18 22 48



If one student is chosen at random,

Find the probability that the student got a B.

  • 18481848
  • 12181218
  • 1248

 

17. Giving a test to a group of students, the grades and gender are summarized below

  A B C Total
Male 10 6 3 19
Female 13 7 5 25
Total 23 13 8 44



If one student was chosen at random,

find the probability that the student was male.

  

Round your answer two decimal places.

 

18.

After giving a test to a group of students, below is the summary of grades by gender.

  A B C Total
Male 10 5 6 21
Female 7 18 9 34
Total 17 23 15 55


If a student was randomly chosen, find the probability that the student earned a BLeave your answer as a reduced fraction.

  

 

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