760 Answered Questions for the topic Probability & Statistics

Probability & Statistics Math Probability

10/02/17

Probability Randomly Selected Question
Usually, errors are found in 10% of lines of code written by software engineers at Error Free Code, Inc. What is the probability that in a randomly selected sample of 5 lines of code none of them... more
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Probability & Statistics Math Statistics Probability

09/28/17

If ​P(B)=0.4​, P(A|B)=0.5, P(B′​)=0.6, and​ P(A|B′)=0.7, what is P(B|A)?
Statistics probability problem. I could really use some help figuring out how to solve this.
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Probability & Statistics

09/28/17

Mason plays a game by flipping two fair coins. He wins the game if both coins land facing heads up. If Mason plays 200 times, how many times should he expect to
Mason plays a game by flipping two fair coins. He wins the game if both coins land facing heads up. If Mason plays 200 times, how many times should he expect to win
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Probability & Statistics

09/26/17

an unfair coin has probability of .4 landing heads. The coin is tossed three times. What is the probability that it lands heads at least once
I need help solving this problem
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Probability & Statistics Statistics Help Asap Please

09/23/17

Which of the following is not a valid description of what a probability is?
A. Quantified plausibility B. A number between 0 and 100 C. Relative frequency D. Degree of belief E. A number between 0 and 1
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Probability & Statistics

09/21/17

Probability
a bag contains 5 red and 3 blue discs. A disc is chosen at random and then replaced. this is repeated 200 times, How many times would you expect a red disc to be chosen?
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Probability & Statistics Statistics Probability

09/20/17

Probability
an urn contains 10 white, 18 red, and 8 blue chips. two chips are drawn without replacement. find the probability of:  first chip red, second chip blue a red and a blue chip first chip not... more
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Probability & Statistics Statistics Probability

09/18/17

Probability problem
a die is rolled find the probability of: an even number a number divisible by 3 not a two nor a six not an ace
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Probability & Statistics

09/13/17

probability
The probability that a student passes course A is .6. The probability that he passes course B is .3. The probability that he passes either A or B or both is .8. What is the probability that he... more
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Probability & Statistics

09/13/17

probability problem
an urn contains tags with numbers 1 to 25. one tag is picked t random. find the probabilities of the occurrence of the following events: odd number number 18 number divisible by 3  a prime... more
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Probability & Statistics

09/13/17

assume all sample points equally likely to occur
four coins are tossed. List the sample space and find the probabilities of the occurrence of the following events: A: exactly 3 heads B: Second coin heads C: more heads then tails
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Probability & Statistics Statistics Probability Statistics Question

09/12/17

The probability that the number of successes is exactly 0
assume that a procedure yields a binomial distribmutinous with 3 trials and a probability of success of 0.10. Use a binomial table to find the probability that the number of successes is exactly... more
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Probability & Statistics

09/06/17

A fair coin is flipped 9 times. What is the probability of getting exactly 6 heads?
Having difficulty understanding how to answer this question
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Probability & Statistics

08/27/17

Experience has shown that 60% of the time a strike by union workers is settled within two-weeks
Experience has shown that 60% of the time a strike by union workers is settled within two-weeks; 55% of the time the union strike fund is adequate to support a strike; and 40% of the time both... more
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Probability & Statistics

08/17/17

what is the probability of drawing a face card in a deck
 what is the probability of drawing a face card in a deck of cards
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Probability & Statistics

08/17/17

Probability exam question
A biased coin has a probability of heads P(H)=p and tails P(T)=1-P what is the probability that up to and including the nth toss at least one head has occurred?
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Probability & Statistics Probability Problems

08/16/17

probability question
A red die is tossed and then a green die is tossed. What is the probability that the red die shows an even number or the green die shows an even number? 
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Probability & Statistics

08/11/17

I have a probability and statistic question that is listed in the description area.
A tray of electronic components contains 15 components, 4 of which are defective. If 4 components are selected, what is the possibility for the followingAll four are defective.Three are defective,... more
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Probability & Statistics Statistics Question

08/07/17

Distribution of Sample Mean Question
Suppose the horses in a large stable have a mean weight of 818lbs, and a variance of 3481.What is the probability that the mean weight of the sample of horses would differ from the population mean... more
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Probability & Statistics

07/31/17

Prove by using mathematical induction that 1+2+3+...+n= [n(n+1)]/2, n is a member of N.
Prove by using mathematical induction 
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Probability & Statistics Math Probability & Statistics,

07/08/17

Please help me with this !!!! (question in the description)
A data set has a median of 58, and eight of the numbers in the data set are less than the median.The data set contains a total of n numbers.If n is even, and none of the numbers in the data set is... more
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Probability & Statistics Statistics

06/30/17

Probability question
According to the U.S Census Bureau Data, 60% of those eligible to vote actually do vote. If 2 eligible voters are chosen at random, what's the probability they both vote?   A)0.036 B) 0.16 C)... more
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Probability & Statistics Statistics

06/30/17

Probability question
Under certain conditions, there is a 0.2 probability that a randomly selected driver will fail a driving test. If 2 randomly selected drivers are tested under these conditions, what is the... more
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Probability & Statistics Probability

06/29/17

A box contains 4 red and 6 blue balls. two balls are picked at random without replacement. What's the probability of drawing balls not of the same color?
probability, statistics
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Probability & Statistics

06/27/17

The data set is number of accidents in each month. What is the probability of an accident occuring in each month based on the data set?
Data Set   Month               # ClaimsAugust                   663October                  589June                       581September              578April                       562November    ... more
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