3,456 Answered Questions for the topic probability

Probability

12/09/20

#### probability problem

there is a 20% chance the total employees will increase by 300, 70% chance will increase by 400 employees and 10% chance will derease by 500 employees, determine the expected gain or loss of...
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Probability

12/09/20

#### Prove P(A/B and C) = P(A/C) if A and B are independent

Probability

12/08/20

#### Probability Questions

In a high school mathematics exam, 72% of the students score grade B and below while the remaining 28% score A. Among those students who score grade A, 23% are female while 53% of the grade B and...
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12/08/20

#### probability....

1) consider the probability statement regarding events A and B below. P(A or B) =0.3 ; P(A and B) = 0.2 ; and P(A|B) = 0.8what is P(B)a) 0.12) 0.253) 0.3754) 0.6672) A suburban...
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12/07/20

#### PLZ HELPPP PROBABILITY

data for the students enrolled in a local high school are shown in the Venn diagram below.alg 2 - 210sophomores - 320both - 85 if a student from the Hight school is selected at random. what is the...
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12/07/20

#### probability HELP URGENT

1) the table below shows the percentage of animals in a shelter over the span of a month. It breaks them into dog and cats and vaccinated and unvaccinated.If an animal was chosen at random. What is...
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Probability

12/07/20

#### Probability question

Two hockey players, Warren and Andrew, each independently take a penalty shot. The odds of Warren scoring are 8:3 in favour. The odds of Andrew scoring are 2:5 against. Marks will be assigned for...
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Probability

12/07/20

#### Probability question

Bag A contains a red and blue marble. Bag B contains a: red, blue and yellow marble. One marble is taken from each bag. The probability to the nearest tenth, that the marbles are both the same...
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Probability Math

12/07/20

#### Proof of independence of random variables X and Y

Prove that random variables X and Y are independent if and only if FX,Y(x,y) = FX(x)FY(y)

Probability

12/06/20

#### Bernoulli's theorem, probability

In an exam, candidates fail with a chance of p = 0.6, (and pass with a chance of q = 1 - p = 0.4).A total of 90 are taking the exam.We would like to estimate p based on Bernoulli's theorem.What is...
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#### geometry probabllity

in contract negotiations between a local government agency and its workers, it is estimated that there is a 50% chance that an agreement will be reached on the salaries of its workers. it is...
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12/04/20

#### Probability, queing problem

N ski slopes meet at the bottom of a valley, the lifts to the slopes are here in one place, there are waiting lines for the lifts.After how many laps are we expected to ski on the most difficult...
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Probability

12/04/20

#### Fifteen people entered a cooking contest and the top 3 contestants win a cash prize. What is the percent chance any contestant wins a cash prize?

Probability

12/03/20

#### A drug test is accurate 96% of the time. If the test is given to 1900 people who have not taken drugs, what is the probability that at least 78 will test positive? Probability =

Probability

12/03/20

#### An urn contains 8 white and 3 red balls.if two ball are drawn at random, find the probability of both are white,both are red and one is of each colourr

An urn contains 8 white and 3 red balls.If two balls are drawn at random . Find the probability of both are white,both are red, and one is of each colour

Probability Statistics

12/03/20

#### Suppose there are 8 green tags, 12 white tags and 4 red tags left to use as name tags at a conference...

Suppose there are 8 green tags, 12 white tags and 4 red tags left to use as name tags at a conference. If tags are given out randomly at the registration desk,a) what is the probability that the...
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Probability Statistics

12/02/20

#### Probability Question

In an office, there are three secretaries, four accountants, and two receptionists. If a committee of three is to be formed, find the probability that one of each will be selected.

Probability

12/01/20

#### Probability, How many four-letter words can be made from the 10 letters "ABCDEFGHIJ"?

If repetition is allowed:If repetition isn't allowed:Each word must begin with an 'A' and letters can be repeated:

Probability

12/01/20

#### Distribution and Statistics

A two-year investment breaks even at the end of two years but yielded a 36% loss in the first year. Find the average annual rate of return for this investment.____%Any help is much appreciated.

Probability Math

12/01/20

#### What is the Probability

For a few weeks, a music producer kept track of newly released songs on a music streaming website. He recorded the music genre and number of times the song was played on its...
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Probability

11/30/20

#### Probability without replacement

1.A jar contains 4 red balls and 7 blue balls. Two balls are drawn at random from the jar without replacement. What is the probability that exactly one of the balls is red.2. A jar contains 5 red...
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Probability

11/28/20

#### Expected value, CDF

Suppose we have a positive, continuous probability variable X, the following expression for the variable does not depend on s: E (X − s | X ≥ s), where E( ) Is the expected value.What is the...
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Probability

11/27/20

#### Choosing given number of items from different subsets

A gathering is attended by A women and B men.Women individually, independently of each other, have a p probability of getting to know each other, while men's chance of getting to know each other is...
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Probability Statistics

11/26/20

#### reccurence relation

Suppose that an and bn are both solutions to a recurrence relation of the form xn = αxn-1 + βxn-2. Prove that for any constants c and d, c an + d bn is also a solution to the same recurrence...
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