PROB & STATS 3.10

A marble manufacturer makes large and small marbles in 5 different colors. The stacked bar graph shows the daily production output for each type of marble. A marble is randomly selected. What's the probability that a marble is black or has a 20 mm diameter? Give the answer as a reduced fraction and decimal rounded to the nearest 100th.

13/30≈0.43

From a standard deck of playing cards, a card is selected at random. What's the probability that the card selected is a club or king? A standard deck contains 52 cards & 4 suits: clubs, spades, hearts, and diamonds. Each suit contains 1 king.

4/13

A 12-sided number cube is rolled. What is the probability that an even number greater than 4 is rolled? Give the answer as a reduced fraction and decimal rounded to the nearest 100th.

5/6≈0.83

A 12-sided number cube is rolled. What's the probability that a prime number or odd number is rolled? Give the answer as a reduced fraction and decimal rounded to the nearest 100th.

7/12≈0.58

From a standard deck of playing cards, a card is selected at random. What's the probability that the card selected is black or a 4? A standard deck contains 52 cards of which 26 are black and 26 are red. A standard deck contains 4 suits, 2 black and 2 red, each has 9 numbered cards.

7/13