Maria is flipping a coin and spinning a spinner. The spinner has 4 equal sections labeled A-D. What is the probability the coin will land on heads and the spinner will land on the letter "A"?
1/8 or 0.125, or 12.5%
Hasaan has a spinner with 5 equal sections, each a different color. After only 10 spins, the pointer had landed on red 40% of the time. How many times would you expect to land on red if you spin it 1000 times?
What is 400?
Define "theoretical probability."
It is the probability of what should occur.
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?
32/48 or 2/3 or 66.66%
You flipped a coin and landed on heads 17 times and tails 13 times. Based on your trial, how many times would you expect to land on tails if you flipped the coin 120 times?
52
Define "experimental probability."
The probability of what actually occurs.
Describe the difference between events that are certain, likely, equally likely, unlikely, or never going to happen.
Certain would be 100% of the time, likely is anything greater than 50% of the time, equally likely is exactly 50% of the time, unlikely is anything less than 50% of the time, and never is anything that has a 0% chance of occuring.
There are 3 red marbles, 2 green marbles, and 1 yellow marble in a box. One marble is taken out and not replaced. A second marble is then taken out and not replaced. What is the probability both marbles that were taken out are red?
1/5, or 0.20, or 20%
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%
Define "independent event."
When one event occurs and the item is replaced before the second event occurs.
A six-sided die is thrown many times. Using the list below, how does the theoretical probability of rolling a 3 compare to the experimental probability of rolling a 3?
Number on Die: 1 2 3 4 5 6
# times it Landed on that Number 4 12 5 10 6 7
The theoretical probability is higher than the experimental probability. (Theoretical = 16.666 or 17%, Experimental = 14%)
Define "dependent event."
When one event occurs and that item is not replaced before the second event occurs.