10. A group of people were asked if they had run a red light in the last year. 202 responded "yes", and 348 responded "no". Find the probability that if a person is chosen at random, they have run a red light in the last year. Give your answer as a fraction or decimal accurate to at least 3 decimal places
10. A group of people were asked if they had run a red light in the last year. 202 responded "yes", and 348 responded "no".
Find the
Give your answer as a fraction or decimal accurate to at least 3 decimal places
11. A group of people were asked if they owned a dog. 276 responded "yes", and 447 responded "no".
Find the probability that if a person is chosen at random, they own a dog.
- 276447276447
- 276723276723
- 171276
12.
A store manager gathers some demographic information from the store's customers. The following chart summarizes the age-related information they collected:
| Age | Number of Customers |
|---|---|
| <20<20 | 56 |
| 20-29 | 92 |
| 30-39 | 91 |
| 40-49 | 87 |
| 50-59 | 69 |
| ≥60≥60 | 60 |
One customer is chosen at random for a prize giveaway. (Round answers to 4 decimal places.)
a. What is the probability that the customer is at least 20 but no older than 49?
b. What is the probability that the customer is either older than 60 or younger than 40?
c. What is the probability that the customer is at least 50?
13.
As shown above, a classic deck of cards is made up of 52 cards, 26 are black, 26 are red. Each color is split into two suits of 13 cards each (clubs and spades are black and hearts and diamonds are red). Each suit is split into 13 individual cards (Ace, 2-10, Jack, Queen, and King).
If you select a card at random, what is the probability of getting:
a) A(n) 4 of Club s? (Please enter a reduced fraction.)
b) A Spade or Club? (Please enter a reduced fraction.)
c) A number smaller than 9 (counting the ace as a 1)? (Please enter a reduced fraction.)
14.
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 face card?
Input your answer as a reduced fraction.
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