A) Vocabulary
the list of all possible outcomes
What is the sample space?
A cup has sticks numbered 1 through 13. What is the probability of an odd number?
What is 7/13?
A coin and a die are both rolled. What is the probability of flipping tails and an even number?
What is (1/2 * 1/2 =) 1/4?
If two letters are selected at random from the alphabet, use the counting principle to determine the number of possible outcomes if they are selected without replacement.
26 * 25 =
What is 650?
What is experimental probability?
What is the outcome when an experiment is completed.
A bag contains marbles; 3 red, 2 green, 5 yellow, 8 black, 4 purple. The probability of drawing a yellow marble and then a black marble.
5/22 * 8/21 =
What is 20/231
the result of an event
What is the outcome?
A spinner has 6 equal sections, red, blue, yellow, green, orange, and pink. What is the probability that the spinner will land on yellow?
What is 1/6?
A bag contains the following marbles: 4 red, 2 green, 3 yellow, and 1 orange. What is the probability that a green then a red will be picked, if the marble is replaced for the second draw.
What is (2/10 * 4/10 =) 8/100 or 2/25?
If two letters are selected at random from the alphabet, use the counting principle to determine the number of possible outcomes if they are selected with replacement.
26 * 26 =
What is 676?
Mia tosses a coin and gets heads 7 times out of 20. Is this theoretical or experimental?
What is experimental?
The probability of getting a tail in a coin toss and rolling a die for 4 or greater.
1/2 * 1/2 =
What is 1/4
what is expected/ predicted to happen in a probability question.
What is theoretical probability?
A spinner has 10 equal sections, 1,2,3,4,5,6,7,8,9, and 10. If the spinner is spun, what is the probability of spinning a number less than 7?
What is 6/10 or 3/5?
A drawer contains 4 white, 4 black, 2 yellow, and 5 polka-dot socks and Taylor wants to find a pair of yellow socks to wear to school. What is the probability that she will choose a pair of yellow socks in her first two picks if she doesn't replace the sock she draws first.
What is (2/15 * 1/14 =) 2/210 = 1/105?
Each day of the week is written on a separate piece of paper. The seven pieces of paper are then placed in a hat, and one piece is randomly selected. Determine the probability that the piece of paper selected contains a day that begins with “S” or a day with 6 letters in the name.
2/7 +3/7 - 1/7=
What is 4/7?
The probability of drawing a face card from a standard deck of cards is 3/13. Is this theoretical or experimental probability?
What is theoretical?
Getting a head followed another head in two consecutive coin tosses.
1/2 * 1/2=
What is 1/4
Once an item is selected it is put back making it possible to select again....this is called
What is replacement?
A drawer contains 20 socks: 8 blue, 4 green, 6 black, and 2 white. What is the probability of picking out a blue sock?
What is 8/20 or 2/5?
A blue number cube and an orange number cube are rolled. What is the P(3, then even)?
What is (1/6 * 1/2 =) 1/12?
(the colors are extraneous information)
10. One card is selected from a deck of cards. Determine P ( A or B ).
A = a picture card B = a diamond
P(12/52) + P(13/52) - (3/52)
What is 11/26
A heart is randomly chosen from a deck of cards 7 out of 12 times. What is the experimental probability?
What is 7/12?
selecting from 30 named sticks from a cup with replacement. Probability of selecting Jack and then Patrick
1/30 * 1/30 = (with replacement!)
What is 1/900
the use of multiplication to find the total outcomes possible.
What is the Fundamental Counting Principle?
Ms. Rippel and Ms. Roszkowicz's class has 20 boys and 12 girls. What is the percent chance that they will choose a girl to answer a question?
What is 12/32 = 37.5%?
A spinner with equal sections of red, blue, green, and purple is spun while a number cube is rolled. What is the P (not blue and not a 3)
What is (3/4 * 5/6 =) 15/24 or 5/8?
BP is considering a new shop, dog grooming. Mrs. Guenette found that the probability of 35 freshmen choosing this shop is 7%, the probability of 24 freshmen choosing this shop is 65%, and the probability of 11 freshmen choosing this shop is 28%. How many freshmen can Mrs. Guenette EXPECT to choose this shop?
35(.07) + 24 (.65) + 11(.28)= 21.13
What is approximately 21 students
A heart is randomly chosen from a deck of cards 7 out of 12 times. What is the theoretical probability?
What is 1/4?
5 unique bunnies in a bag. The probability that a black bunny will escape once the white and the spotted one have escaped.
1/5 * 1/4 * 1/3 =
What is 1/60