Anything goes
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%
At a wedding you can choose from 4 different meats (lobster, steak, chicken, or pork). You can choose from 2 side dishes (pasta or vegetables) and from 2 desserts (fruit or ice cream). How many total outcomes are possible?
16 outcomes
You are trying to decide what to wear to school. You know you have a green pair of pants, a red pair, and a blue pair. You also have a brown shirt, a plaid shirt, and a yellow shirt. How many different outfit combinations can you make?
9
What are the 4 ways a sample can be bias?
The sample doesn't represent the whole population.
A leading question is asked
People volunteer to be in the survey
Are chosen based on convenience
How likely is it that a coin is flipped and lands on tails?
Equally likely, 1/2 or 50%
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?
2/3 or .66666....
A bag contains 4 red marbles, 3 orange marbles, 7 green marbles, and 6 blue marbles. What is the probability of picking a red without replacing it then picking a orange? Convert your answer to a decimal
.0316
What is the number of possible outcomes for spinning one spinner with 8 equal sections and another spinner with 6 equal sections?
48 possible outcomes
Define Mean, Median, Mode and Range
Mean = Average
Mode= # that occurs the most
Median- # in the middle
Range- Difference between the largest and smallest number
How likely is it that a number cube is tossed and lands on 3?
Unlikely, 1/6 or .16666
What is the probability of rolling two odd numbers in a row with a standard number cube?
1/4, or 0.25, or 25%
A random sample of people at a mall shows that 22 prefer to take a family trip by car, 18 prefer to travel by plane, and 10 prefer to travel by bus. How many people out of 500 would you expect to say they prefer to travel by plane?
180
Amy and Shawn are candidates for class president of the 7th grade. Ashley, Kevin, and Ammaar are candidates for vice president. How many winning combinations are possible?
6
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.
How likely is it that a number cube is tossed and it lands on 8?
never going to happen, 0 0%
There are 3 red marbles, 2 green marbles, and 1 yellow marble in a box. One marble is taken out and not replaces. 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%
A store sells 3 types of pants: jeans ,capris and cargos. The store workers survey 50 customers at random about their favorite type of pants. The survey responses are indicated at the right. Jean 25, Capris 11, Cargos 14
If 450 pairs of pants are ordered, how many should be jeans?
225
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?
1 out of 12
Define "independent event."
When one event occurs and the item is replaced before the second event occurs.
How likely is it that a number cube is tossed and lands on any number 1-6?
Certain, 100%
Kelvin 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%
A survey about favorite hobbies is conducted in a sports store. It this bias or unbias and why
Bias not representing the entire population.
What is the probability of rolling three 4's in a row on a number cube?
1/216
Define "dependent event."
When one event occurs and that item is not replaced before the second event occurs.
How likely is it that a number cube lands on 2 and a coin lands on heads?
unlikely, .083333 1/12