Probability Equations Explained with Examples

The survey predicted the winning probability of senator is 30%. The previous election shows the winning probability is 50%. What is the probability to loose the election.

Tahmid Knox 2021-10-17

A normal population has a mean of 80.0 and a standard deviation of 14.0. Determine the likelihood of a value of 75.0 or less.

Phoebe 2021-10-16

A fair quarter is flipped 9 times. For each of the following probabilities, use the formula for the binomial distribution and a calculator to compute the requested probability. Next, look up the probability in the binomial probability distribution table. (Enter your answers to three decimal places.)
(a) Find the probability of getting exactly three heads.
(b) Find the probability of getting exactly two heads.
(c) Find the probability of getting two or more heads.
(d) Find the probability of getting exactly three tails.

Anish Buchanan 2021-10-15

A bowl contains candies of the same size in three flavors: orange, strawberry, and pineapple. If the probability of randomly pulling out an orange candy is 2/8. and the probability of randomly pulling out a strawberry candy is, 3/8. What is the probability of randomly pulling out a pineapple candy?

Anish Buchanan 2021-10-15

Find the probabilities for the standard normal random variable z:
P(z>1.34)

Chardonnay Felix 2021-10-15

Four roads away from the country jail.
A prisoner has escaped from the jail and selects the road at random.
If road 1 is selected, the probabiltiy of escaping 1/8; if road 2 is selected , the probability of success is 1/6; if road 3 is selected, the probability of escaping is 1/4 and if road 4 is selected, the probability of succes is 9/10
What is the probability that prisoner will succeed in escaping?

remolatg 2021-10-13

A normal population has a mean of 80.0 and a standard deviation of 14.0. Compute the probability of a value between 75.0 and 90.0.

Sinead Mcgee 2021-10-13

The probability that a regularly scheduled flight departs on time is P(D) = 0.83, the probability that it arrives on time is P(A) = 0.82; and the probability that it departs and arrives on time is P(D N A) = 0.78. Find the probability that a plane arrives on time given that it departed on time

preprekomW 2021-10-12

Find the probabilities for the standard normal random variable z:
P(z<-4.32)

CoormaBak9 2021-10-12

Determine whether the statement is true or false. If it is false, rewrite it as a true statement. When an event is almost certain to happen, its complement will be an unusual event.

CMIIh 2021-10-12

The probability that a regularly scheduled flight departs on time is P(D) = 0.83, the probability that it arrives on time is P(A) = 0.82; and the probability that it departs and arrives on time is P(D N A) = 0.78. Find the probability that a plane departed on time given that it has arrived on time

Bevan Mcdonald 2021-10-11

Assume that a chocolate bar consists of n squares arranged in a rectangular pattern. The entire bar, a smaller rectangular piece of the bar, can be broken along a vertical or a horizontal line separating the squares. Assuming that only one piece can be broken at a time, determine how many breaks you must SUccessively make to break the bar into n separate squares. Use strong induction to prove your answer.

rocedwrp 2021-10-11

a simple binary communication channel carries messages by using only two signals, say 0 and 1. We assume that, for a given binary channel, 40% of the time a | is transmitted; the probability that a transmitted 0 is correctly received is 0.90 and the probability that a transmitted | is correctly received is 0.95. given a 0 is received, the probability that 0 was transmitted.

banganX 2021-10-09

Find the two positive numbers that satisfy the given requirements. - The sum of the first number squared and the second number is 54 and the product is a maximum.

chillywilly12a 2021-10-08

Consider two products, A and B, both of which have the same purchase probability. Product A has a population size of 1000 and a 50 percent awareness probability. Product B has a population size of 10,000 and a 5 percent awareness probability. Which product do you expect to sell more? Product B

Yasmin 2021-10-02

Assume the random variable X has a binomial distribution with the given probability of obtaining a success. Find the following probability, given the number of trials and the probability of obtaining a success . Round your answer to four decimal places. $P (X < 4), n = 6, p = 0.4$

SchachtN 2021-10-01

X denotes a binomial random variable with parameters n and p, Indicate which area under the appropriate normal curve would be determined to approximate the specified binomial probability.
$P (X < 4)$

Josalynn 2021-09-24

John is a great fortune teller. Assume that we know three facts:
If John tells you that a lottery ticket will win, it will win with probability 0.99.
If John tells you that a lottery ticket will not win, it will not win with probability 0.99999.
When John sees a ticket he predicts with probability 10~° that a ticket is a winning ticket.
This also means that with probability 1— 10-5, John predicts that a ticket will not win.
a. Given a ticket, what is the probability that it wins?
b. What is the probability that John correctly predicts a winning ticket?

Suman Cole 2021-09-24

An urn contains 3 one-dollar bills, 1 five-dollar bill and 1 ten-dollar bill. A player draws bills one at a time without replacement from the urn until a ten-dollar bill is drawn. Then the game stops. All bills are kept by the player. Determine the probability of the game stopping at the second draw.

Carol Gates 2021-09-24

The probability of A is 0.30, the probability of B is 0.40 and the probability of both is 0.30. What is the conditional probability of A given B? Are A and B independent in a probability sense?

If you are looking for high school probability equations, you are in the right place because we can provide you with the list of answers and questions that will help you as you deal with your equations or just need practical examples. If you need to deal with something specific, browse through the list of examples and see how each answer has been handled.

The high school probability differs from those engineering tasks, yet it is not always much simpler if you do not know the basics. Therefore, take your time to see our examples and learn.

High school probability

Probability Examples and Explanations