Probability 1
What the probability of rolling a an odd number on a six sided dice?
1/2 or 50% or .50.
A dice has 6 outcomes, a coin has two outcomes, use fundamental counting principle to figure out the possible outcomes of this event.
12 outcomes total.
There are 200 people. 50% of them start talking. 40% of them walk away. 10% of them stand there doing nothing. How many people stand there and do nothing?
20.
Three out of every 10 students ages 6-14 have a magazine subscription. Suppose there are 30 students in Jakes's class. About how many have a magazine subscription?
9 students.
What is the different between a histogram and a number graph? A survey found that 80% of teens enjoy going to the movies in their free time. Out of 5,200 teens, predict how many said that they do not enjoy going to the movies in their free time?
1,040.
If there are six red cubes and four blue cubes in a bag, what is the probability that you and your friend both pick a blue cube?
0.13 or 13/100 or 13%.
How many different ways can you wear 3 bracelets on your wrist?
6 ways P(3,3).
8 people play basketball, 10 play soccer, 6 play football, 5 play tennis and 8 play baseball. What percent of people play football?
13%.
What kind of plot would show the median age of members in a choir?
Box plot.
What is the answer to P(9, 3)?
504.
What is the definition of theoretical probability?
What mathematically should happen when conducting a probability experiment.
Use the fundemental counting principal to find out how many outcomes are there for selecting one letter from the word MATH by tossing a coin?
8.
Give an example of a set that would be represented in a line graph.
Sample answer: The population of polar bears in the last ten years.
What is the different between a histogram and a number graph?
A histogram shows different ranges when a number graph shows single numbers
What is the answer to P(23, 7)
1,235,591,280.
A spinner can be used to model equally likely outcomes. Is that sometimes, always or never true?
Sometimes because it depends on how big the spaces are on the spinner.
What is the answer to p(12, 5)?
95,040.
There are 6 vowels and 3 consonants in a bag. One letter tile is drawn from the bag and replaced 300 times. Predict how many times a consonant will not be picked.
About 100 times
Is the following sentence always, sometimes or never true?
A voluntary response sample is valid.
Never True.
Sample Answer. A voluntary response is valid to only those who want to participate in sampling.
What is the probability of a dice landing on four, eight times in a row?
1/56656
Write and algebraic expression to find the number of outcomes if a six sided dice is rolled X times.
x6.
There are 1,320 ways for three students to win first, second and third place during a debate match. How many students are there on the debate team?
12 students, 12x11x10=1,320.
Does adding values that are much greater or much less than the other values in a set of data affect the median of the set?
No (for median you just find the center of the data).
Determine if the following statement is always, sometimes, or never true. A circle graph can be used to display data from a bar graph.
Always.
The questions on a multiple choice test has 4 answer choices. Describe a model that you could use to simulate the outcome of guessing the right answers to a 50 question text.
Sample answer: spin a spinner with 4 equal sized sections 50 times.