APS4-1 Probability Review (Ch 14 and 15)

Probability can be written as ...

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?

The chart below represents the number of marbles in a jar. What is the probability of picking green?

P(green) =

A bag has 3 red marbles, 2 blue, 4 greens and  1 yellow. What is the theoretical probability of pulling a red?

What is the probability of a complement of A? Remember to simplify your answer.

The probability of raining today is 30%.  What is the probability that it will NOT rain today?

If the probability of an event is p, then the probability of it not happening is 1-p. What is that called?

What is the probability of the spinner landing on red?

P(RED) =

I have 4 yellow marbles and 8 blue marbles in a bag. What is the probability that I will pick a blue?

Kerry is picking marbles out of a bag. Out of which bag would it be impossible to choose a white marble?

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.

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?

What is the approximate Probability of drawing a Red Face Card from a standard deck of shuffled cards?

P( RED FACE CARD) =

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?

What is the probability of rolling a single 6-sided die to a number greater than 4?

P(>4) =

Which of the following are independent events?

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:

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?

In order to use the Multiplication Rule (shown below) to determine the probability of Event A and Event B both happening, events must be ___________________.

In order to use the Addition Rule (shown below) to determine the probability of Event A or Event B happening, the events must be _______________________.