5,341 Answered Questions for the topic probability

Probability

12/31/20

probability and stimulation

Ten percent of the keyboards a computercompany manufactures are defective.Design and describe a simulation that willdetermine the experimental probability thatone or more of the next three... more
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Probability

12/31/20

Probability and stimulation

(a) Shuffle a standard deck of 52cards, draw a single card, andrecord it. Return the card to thedeck, reshuffle, draw another card,and record it. Repeat the processat least 50 times. Use your... more
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Probability

12/31/20

probability and combinations
show that 2) r ( n ) = n ( n - 1 ) r r - 13) 2 ( 2n -1 ) = ( 2n ) n-1 n
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Probability

12/31/20

probability question

The moderator of a forum discussion s assigning seats to the six participants. If the seats are arranged in linear fashion, determine the probability that Dr. Sarah and Dr. Mathew are seated next... more
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Probability Combinations

12/30/20

Probability and Combinations

show that 1)5 ( n ) = n ( n - 1 ) 5 42) r ( n ) = n ( n - 1 ) r r - 13) 2 ( 2n -1 ) = ( 2n ) n-1 n*the bracket includes the... more
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Probability

12/30/20

probability of deck of cards
A standard deck of cards has had all the face cards (jacks, queens, andkings) removed so that only the ace through ten of each suit remains. Agame is played in which two cards are drawn (without... more
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Probability Statistics

12/19/20

Statistics probability

If it rains 10% of the time in Phoenix Arizona and I go there for 14 days what is the probability that it will rain:A. One day?b. More than 2 days?c. Four or more days?d. Not at all?e. Less than... more
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Probability

12/19/20

isn't it a question on conditional probability? If not then why?
A bag contains 3 red marbles and 4 blue marbles. Two marbles are drawn at random without replacement. If the first marble drawn is blue, what is the probability the second marble is also blue?
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Probability

12/18/20

math probability
what is the answer to 15C0 + 55C55
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Probability

12/18/20

probability and statistics
A club has 21 members, four of whom are executives. Five members are randomly selected to take part in a survey. a) What is the probability that four non-executive members are chosen?b) what is... more
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Probability Statistics

12/17/20

Regression to the mean (please help)
Suppose Mike is playing a coin game as follows. First he throws three fair coins into the air (First Toss). For each “heads”, he wins a dollar. Then, he tosses the three coins again (Second Toss).... more
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12/17/20

What is the probability that at least 1 odd number was recorded during the three drawings?
A box contains four numbered balls: 2, 6, 7. and 8. A ball is drawn at random from the box, its number is noted, and it is then returned to the box. This process is repeated two more times. What is... more
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12/17/20

how many committees are possible?
A class consists of 4 seniors, 5 juniors, and 1 sophomore. 4 of these 10 students will be chosen to serve on a committee. If no more than 1 senior may serve on the committee, then how many... more
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12/17/20

what is the probability that both red and blue marbles were removed from the bag?
There are 3 red and 4 blue marbles in a bag. Simultaneously at random, 3 marbles are removed from the bag. If at least 2 of the marbles removed from the bag are blue, then what is the probability... more
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12/17/20

How many codes do not contain the letter X?
A code is formed by arranging 3 not necessarily distinct letters from the set {W, X, Y, Z}.  ZYW and ZZX are examples of possible codes. How many codes do not contain the letter X?
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Probability

12/17/20

Random Walk Probability
Consider the infinite random walk on the integers that goes from i to i+1 in one move with probability 4/7, goes from i to i-1 in one move with probability 1/7, and finally goes from i to i-2 in... more
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Probability

12/17/20

Probability Question
If 10 people consisting of 5 married couples, are randomly arranged in a row, find the probability that no person is next to their spouse. Give the numerical value of this probability.
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Probability

12/17/20

Probability Question
A big box contains 14 pairs of shoes. If 9 shoes are randomly selected from the box, find the probability that there will be EXACTLY two complete pairs.
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Probability

12/16/20

I have a doubt in this question.
It is well known to the Public Health Service that Harry’s Restaurant givesonly casual attention to matters of cleanliness; consequently, the PublicHealth Service periodically closes the restaurant... more
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Probability Math

12/16/20

Is it easier to flip three coins and get exactly two heads or is it easier to flip four coins and get exactly two heads? Explain
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Probability

12/16/20

Help Please!!! .
A bag contains 9 marbles: 3 are green, 2 are red, and 4 are blue. Linda chooses a marble at random, and without putting it back, chooses another one at random. What is the probability that both... more
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Probability

12/16/20

what is probability ?
A football player has 20 footall kits uniform in his closet suppose 12 of those kits are red and the other are blue he gets dressed in the dark so he just grabs a kit and is on he plays football... more
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Probability

12/16/20

Markov Question
An auto insurance company classifies its customers in these categories poor, satisfactory, and preferred. Each year 15% of those in the poor category are moved to satisfactory and 5% of those in... more
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Probability

12/14/20

Probability of joint pdf’s
What’s the probability of P(X•Y<1) Given the pdf’s fY(y)=3/8•y2 for 0<y<2fX(x)=3/8•x2 for 0<x<2its supposed to be around 0.08 but I just can’t find the right method
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Probability

12/14/20

Assuming that the two machines starts at the same time, what is the probability that machine A manufactures the first product?
A company has two types of machines (A and B) to manufacture the same exact product. The manufacturing time of each product is independent of the others and can be modeled as an exponential random... more
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