Probability A
What is the likelihood (impossible, unlikely, as likely as not, impossible, certain) of the following event:
Flipping a coin and getting a heads
As likely as not
What is the likelihood (impossible, unlikely, as likely as not, impossible, certain) of the following event:
Rolling a number less than 6 on a number cube labeled 1 through 6
Likely
What is the likelihood (impossible, unlikely, as likely as not, impossible, certain) of the following event:
Spinning a number less than 3 on a spinner with 8 equal sections marked 1 through 8
Unlikely
What is the likelihood (impossible, unlikely, as likely as not, impossible, certain) of the following event:
Drawing a red or blue marble from a bag of red and blue marbles
Certain
What is the likelihood (impossible, unlikely, as likely as not, impossible, certain) of the following event:
Rolling a number greater than 6 on a number cube labeled 1-6
impossible
The classic wood carousel at Carousel Park in Hampton, VA has 32 jumping horses and 16 standing horses. What is the probability of randomly selecting a jumping horse?
1/2, or 0.50, or 50%
After the movie premiere, 55 out of 130 people surveyed said they liked the movie. What is the experimental probability that the next person surveyed will say he or she liked the movie?
11/26, 0.42, or 42%
What is the number of possible outcomes for spinning one spinner with 8 equal sections and a number cube being simulated at the same time?
48 possible outcomes
Caire spins a spinner with 5 equal sections numbered 1-5 and she spins another spinner with 5 equal sections with the letters A-E. What is the probability she will spin a 4 and a B?
1/25 or 0.04, or 4%
What is the probability that a number cube is tossed and lands on a multiple of 2?
1/2, 0.50, or 50%
After a movie premiere, 55 out of 130 people surveyed said they liked the movie. What is the experimental probability that the next person surveyed will say that he or she did not like the movie?
15/26, 0.58, 58%
A letter tile is randomly selected from a bag, recorded, and replaced 100 times. The results are listed below. What is the experimental probability of selecting the letter "E"?
A = 16 E = 11 I = 29 O = 19 U = 25
11/100 or 0.11, or 11%
Pedro recorded the types of birds that visit his bird feeder. Based on the results below, what is the probability the next bird will be a chickadee? Woodpecker = 3 Chickadee = 5 Cardinal = 1 Sparrow = 13 Blue Jay = 3
1/5, or 0.20, or 20%
Ms. French is packing for a trip. She packs a white blouse, a pink blouse, a blue blouse, and a green blouse. She also packs a black suit, a navy blue suit, and a gray suit. What is the probability that the first outfit she wears is the gray suit with a pink blouse? (hint: draw a table)
1 out of 12
A six-sided die is thrown 60 times. Using the list below, how does the experimental probability of rolling a 3 differ from how many times you would expect to roll a 3?
1 2 3 4 5 6
8 6 7 12 10 7
The probability that you would expect to get would be higher than the experimental probability. (Expectations = 1/6, 17%; Experimental = 7/60, 12%)
A bowler knocks down at least 6 pins 70 percent of the time. Out of 200 rolls, how many times can you predict the bowler will knock down at least 6 pins?
140 pins
The basketball player, JJ Redick on the 76ers, scores a 3 point shot 39% of the time. If he were to attempt 60 3-point shots, how many would you expect him to miss?
37 baskets
The 7th-grade gym class is trying to conduct an experiment. They want you to create a simulation to represent the gender of the student going up to bat (girl or boy) and what type of hit they get (single, double, triple, or homerun)? Qhat type of tools/manipulatives could you us to conduct this simulation?
sample answer: flip a coin for gender and pick 4 different colored chips out of cup to represent the type of hit
In a current-events class, a professor predicted that at least 78 percent of students prefer getting their news from a digital source rather than from a print source. He polled 3 classes. The results are shown in the table below.
Class 1 Class 2 Class 3
Digital 20 14 30
Print 5 10 7
In which class(es) did his prediction hold true? Explain.
In classes 1 and 3, because the percents preferring digital were 80% and 81%
Rob notices that 55 percent of the people leaving the supermarket choose plastic bags instead of paper bags. Out of 600 people, how many can Rob predict will carry paper bags?
270 People