788 Answered Questions for the topic Probability & Statistics

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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Probability & Statistics

06/24/17

What are the chances of rolling a 3 on one die and then rolling the die and obtaining a 4
Probability question 
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Probability & Statistics

06/21/17

How many arrangements are there of the word probability
Probability
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Probability & Statistics

06/20/17

Probability that neither will score
When Laura and Michelle play in the hockey team, the probability that's Laura will score is 1/3 and that Michelle scores is 1/2. Find the probability that NEITHER will score in the next game. 
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Probability & Statistics

06/20/17

What is P(A'+B)
If P(A)= 0.2, P(B)= 0.5 and P(AxB)= 0.1    Find P(A'+B) 
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Probability & Statistics

06/19/17

What is the probability that Natasha got it right?
Billy answers on average 5 questions right out of 7. Natasha's average is 5 questions out of 9. They both attempt the same problem. If the question is answered correctly, what is the probability... more
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Probability & Statistics

06/17/17

Suppose that at an airport security checkpoint, 1 in 50 people are randomly selected for a search.
Suppose that at an airport security checkpoint, 1 in 50 people are randomly selected for a search. If there are 33 people ahead of you in line, what is the probability that you will be the first... more
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Probability & Statistics

06/15/17

A standard pair of six-sided dice is rolled. What is the probability of rolling a sum less than or equal to 4?
A standard pair of six-sided dice is rolled. What is the probability of rolling a sum less than or equal to 4?
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Probability & Statistics

06/04/17

A baseball team has 12 players the coach needs to choose 3 to sit on the bench how many combinations of players can the coach choose? Show me the formula please
need to find the formula for probability of a team with 12 players 3 have to sit on the bench how many combinations does the coach have show formula please
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Probability & Statistics

05/26/17

Probability Question
A radio disc jockey has 7 songs on this upcoming hour's playlist: 3 are rock songs, 2 are reggae songs, and 2 are country songs. The disc jockey randomly chooses the first song to play, and then... more
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Probability & Statistics

05/26/17

Probablity
A science class has 7 girls and 5 boys in the seventh grade and 4 girls and 4 boys in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a... more
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Probability & Statistics

05/25/17

What are the odds of this occurring?
There are numbers from 1 to 2500. There are 625,000 people. What are the chances that 3 people pick the same 4 numbers?The order does not matter and the people cannot repeat.
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Probability & Statistics

05/24/17

Find the z-score that corresponds to the 30th percentile.
How to you find this answer using a ti-84 calculator.
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Probability & Statistics Normal Distribution

05/23/17

If a normal distribution has a mean of 65 and Standard deviation of 8. What score bounds the 19.8% below the mean?
I know how to solve the normal distribution in terms ofBelowBetween Two numbersAnd above the numberBut i don't know how to solve this with this kind of question.
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Probability & Statistics

05/22/17

Suppose there are 1000 first-year students at a certain university.
Two hundred are taking French but not statistics, one hundred are taking statistics but not French, and another 50 are taking both French and statistics. If you pick a student at random, find the... more
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Probability & Statistics

05/22/17

Brett makes a putt about 65% of the time. What is the probabilty that brett's first m9iss will be on his 5th putt?
Brett makes a putt about 65% of the time. What is the probabilty that brett's first miss will be on his 5th putt?  
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Probability & Statistics

05/12/17

a random sample of n=9 scores is obtained from a normal population with μ=40 and σ=18. what is the probability that the sample mean will be greater than M=43?
a random sample of n=9 scores is obtained from a normal population with μ=40 and σ=18. what is the probability that the sample mean will be greater than M=43?  
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