A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?
1 point
1
Question 3
3.
The chart below represents the number of marbles in a jar. What is the probability of picking green?
P(green) =
1 point
1
Question 4
4.
A bag has 3 red marbles, 2 blue, 4 greens and 1 yellow. What is the theoretical probability of pulling a red?
1 point
1
Question 5
5.
What is the probability of a complement of A? Remember to simplify your answer.
1 point
1
Question 6
6.
The probability of raining today is 30%. What is the probability that it will NOT rain today?
1 point
1
Question 7
7.
If the probability of an event is p, then the probability of it not happening is 1-p. What is that called?
1 point
1
Question 8
8.
What is the probability of the spinner landing on red?
P(RED) =
1 point
1
Question 9
9.
I have 4 yellow marbles and 8 blue marbles in a bag. What is the probability that I will pick a blue?
1 point
1
Question 10
10.
Kerry is picking marbles out of a bag. Out of which bag would it be impossible to choose a white marble?
1 point
1
Question 11
11.
Based on the teacher’s opinion, she thinks there is about a 75% chance that all of the students will pass the State Department’s End of Course Test.
1 point
1
Question 12
12.
Jessica doesn’t have any idea of what the answer is on one of her multiple choice questions like this problem. The problem has 4 possible choices. After she guesses the answer, she realized that she has a 25% chance of getting that question correct. What type of probability did she use?
1 point
1
Question 13
13.
What is the approximate Probability of drawing a Red Face Card from a standard deck of shuffled cards?
P( RED FACE CARD) =
1 point
1
Question 14
14.
A person has 40 songs downloaded to their smartphone and has the phone set to a random shuffle. The classification of the 40 songs could be described as: 5 Country songs, 10 Classical pieces, 15 Hip Hop, 5 Rap, and 5 Pop Songs.
What is the probability that the next song played is Classical music?
1 point
1
Question 15
15.
What is the probability of rolling a single 6-sided die to a number greater than 4?
P(>4) =
1 point
1
Question 16
16.
Which of the following are independent events?
10 points
10
Question 17
17.
At a high school, some students take Spanish, and some do not. Also, some
students take an arts subject, and some do not. Let S be the set of students who
take Spanish and A be the set of students who take an arts subject. On the Venn
diagrams given, shade the region representing the following instances:
1 point
1
Question 18
18.
Suppose that 60% of families living in a certain county own a sedan and 38% own and SUV. If 14% of families in the area own neither, what is the probability that a randomly selected family will own both a sedan and an SUV?
1 point
1
Question 19
19.
In order to use the Multiplication Rule (shown below) to determine the probability of Event A and Event B both happening, events must be ___________________.
1 point
1
Question 20
20.
In order to use the Addition Rule (shown below) to determine the probability of Event A or Event B happening, the events must be _______________________.