5,395 Answered Questions for the topic probability

Probability

03/05/21

Probability question
What do we mean when we say that the probability is a conditional probability? 
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Probability

03/05/21

Marble Probability
Given that a box has 3 blue marbles, 2 red marbles, and 4 yellow marbles, use the probability formulas to answer the following questions. Reduce all fractions. Use / as the fraction bar and do not... more
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Probability

03/05/21

An urn contains 7 blue balls, 12 red balls, 6 green balls, and 14 yellow balls. You stick your hand in and pull out a ball without looking. What is the probability of selecting a red ball?

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Probability

03/05/21

Probability or ratio question
There are some counters in a box . Each counter is blue or red or green. There are twice as many blue counters as red counters and three times as many green counters as blue counters. One counter... more
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Probability

03/05/21

Probability or ratio question
There are some counters in a box . Each counter is blue or red or green. There are twice as many blue counters as red counters and three times as many green counters as blue counters. One counter... more
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Probability

03/05/21

HELPP probability marbles
Given that a box has 3 blue marbles, 2 red marbles, and 4 yellow marbles, use the probability formulas to answer the following questions. Reduce all fractions. Use / as the fraction bar and do not... more
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Probability

03/05/21

random sample of 1353 adult showed that 688 of them has stopped at least once on the internet. What is the probability that randomly selected adult has stopped on the internet
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Probability Ap Statistics

03/04/21

Cruise Ship Problem
The following data were obtained about 500 passengers on a cruise ship. 272 passengers brought a camera. 218 passengers brought a laptop computer. 196 passengers brought MP3 players. 51 passengers... more
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Probability

03/04/21

Answer and solution for this please. Thank you! A class has 8 boys and 15 girls. If three students are selected at a random from the class, what is the probability that they are all boys?
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Probability Math Statistics

03/03/21

Can someone help me with sampling distribution of the sample mean?
A population has mean 1,542 and standard deviation 246.a) Find the mean and standard deviation of Xbar for samples of size 100.b)Find the probability that the mean of a sample of size 100 will be... more
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Probability Math Statistics

03/03/21

Trouble with urn question
The urn holds 300 blue & 700 green balls. Select 10 balls with replacement,there are a total of 1k balls. This is a combination question I'm sure, but I am getting a big number when trying to... more
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Probability

03/02/21

A bag contains five black, three red, and eight white balls. If three balls are drawn at random, find the probability that all are white.
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Probability

03/02/21

P(A)= 0.23 P(B)=0.72 P(A and B)=0.05 Find P(B/A)
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Probability

03/02/21

Given n(A)= 39 Given n(B)=78 Given n(A and B)=15 Find n(A or B)
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Probability

03/02/21

In a large population, 63% of people have been vaccinated. If four people are randomly selected, what is the probability that at least one of them have been vaccinated?
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Probability

03/02/21

You toss a coin 4 times. What’s the probability that you get at least one tail?

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Probability

03/02/21

Suppose 64% of people own dogs. If you pick two people at random, what is the probability that they both own a dog?
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Probability Statistics

02/28/21

Probability: Calculate two events.
Let A and B be two events belonging to the same sample space, such that P (A) = 1/2, P(B) = 3/5 and P (A ∩ B) = 1/4. Calculate the probabilities of upcoming events: At least A or B occurs. A... more
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Probability

02/28/21

Probability: Calculate two events.
Let A and B be two events belonging to the same sample space, such that P (A) = 1/2, P(B) = 3/5 and P (A ∩ B) = 1/4. Calculate the probabilities of upcoming events: At least A or B occurs. A occurs... more
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02/28/21

Probability - Word Problem (Data Sufficiency Question)
In a tin, there are only gold rings and silver rings. If Rose were to simultaneously pick two rings from the tin, what is the probability that she will not pick any gold rings? Statement (1) The... more
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02/26/21

statistics help! standard deviation
The standard deviation of Y is 1.236.Choose the best interpretation of the standard deviation from those given below.A) The most common number of siblings among high school students is 1.236.B) The... more
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Probability Math Statistics Sat

02/26/21

statistics help! binomials
Faith is a 95% free throw shooter. At practice, each player shoots 20 free throws. Let X =the number of free throws Faith makes out of 20 shots.Enter your answers rounded to 3 decimal places. Use... more
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Probability Math Statistics Sat

02/26/21

statistics help! discrete and continuous variables
Identify if the following scenarios describe a discrete or continuous random variable. X = The number of persons in an emergency room W = The weight of an elephant at the zoo  H = The areas of... more
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02/26/21

STATISTICS HELP! Faith is a 95% free throw shooter. At practice, each player shoots 20 free throws. Let X = the number of free throws Faith makes out of 20 shots.
Faith is a 95% free throw shooter. At practice, each player shoots 20 free throws. Let X =the number of free throws Faith makes out of 20 shots.Which of the following explains why this scenario... more
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Probability

02/26/21

If two fair dice are​ rolled, what is the probability that the total showing is either even or less than ​four?
If two fair dice are​ rolled, what is the probability that the total showing is either even or less than four?
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