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... more
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... more
Probability Algebra 2 Statistics

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... more

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... more
Probability Algebra 2 Trigonometry

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... more
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... more
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... more
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... more
Probability Math Geometry Math Help

12/04/20

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... more
Probability Math Statistics

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... more
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... more
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... more
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... more
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... more
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... more
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... more
Probability Statistics Reccurence

11/26/20

Probability .

solve the given reccrence relation problemxn = xn-1 + 2n , x0 = 5
1 3 5 6 7 139

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