260 Answered Questions for the topic Probability Problems

09/29/18

My friends and I (there are 9 of us altogether) are trying to pick 4 of us to play on a quiz bowl team. How many ways can we choose the team?
My friends and I (there are 9 of us altogether) are trying to pick 4 of us to play on a quiz bowl team. Howmany ways can we choose the team?
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09/07/18

15 coupons numbered 1-15,7 are selected at random with replacement, probability 9 will be the largest on selected coupons.
It's from the book m.l Khanna.
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09/02/18

There are four people in a room. For every two people, there is a 50% chance that they are friends.
Contituatio of the above question......   Two people are connected if:?they are friends, or?a third person is friends with both of them, or?they have different friends who are friends of each... more
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08/20/18

Probability of dependent event- marble problem
Question : there are 4 blue marble labelled P, 7 blue marbles labelled Q, 3 green marbles labelled P, 9 green marbles labelled Q. Two marbles are drawn at random from the box. Find the probability... more
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08/02/18

Please Help me to answer this question. Justify your answer please
A student council has five seniors, four juniors, three sophomores, and two freshmen as members. In how many ways can a four member council committee be formed that includes one member of each class?
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08/01/18

Please help me to answer these questions for cumulative distribution of the random variable X
The cumulative distribution of the random variable X is given by G(x) = 0                    for x<0            3x2-2x3          for 0≤x<1            1                   for x ≥1 a)Find the... more
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07/25/18

Probability of Independent Events
A student ran out of time on a multiple choice exam and randomly guessed the answers for two problems. Each problem had 4 answer choices - a, b, c, d - and only one correct answer. What is the... more
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07/25/18

Probability and Data Analysis
There is a stack of 8 cards, each given a different number from 1 to 8. Suppose we select a card randomly from the stack, replace it, and then randomly select another card. What is the probability... more
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07/25/18

Probability and Data Analysis
So a spinner has 5 equally sized sections, 3 of which are gray and 2 of which are blue. The spinner is spun twice. What is the probability that the first spin lands on gray and the second spin... more
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07/21/18

a website requires each user to create a 4 digit identification number. each digit can be any whole number 0 through 9. what is the probability of guessing a us
a website requires each user to create a 4 digit identification number. each digit can be any whole number 0 through 9. what is the probability of guessing a user identification number in one... more
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06/19/18

Please help me solve this
Suppose that events E and F are independent, P(E) equals0.6, and P(F)equals0.7. What is the Upper P left parenthesis Upper E and Upper F right parenthesis?
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06/19/18

Find the probability that you are not dealt a card with number from 3 to 8
Find the probability that you are not dealt a card with number from 3 to 8.   Help please. Thank you
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06/18/18

If two states are selected at random from a group of 10 ​states, determine the number of possible outcomes if the group of states are selected with replacement
i need the probability  
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06/17/18

Probability
Toss a coin 5 times. What is the probability that there are exactly 2 Heads and 3 tails?   Five men and three women applied for 2 scholarships. What is the probability that both the winnerswill... more
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06/16/18

Find the probability of picking one of each four colours in the first tries without the marbles being replaced.
A bag contains 10 red marbles, 3 blue marbles, 7 white marbles, and 5 green marbles. find the probability of picking one of each four colours in the first tries without the marbles being replaced.
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06/15/18

What is the probability of her picking two heart cards?
Ella is picking two cards from a deck of cards that contain only heart and spade cards. Based on her record, she has a 30% chance of picking a heart card if it's a red card first and a 60% of... more
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06/07/18

If you have a circle with a radius of 11 and a smaller circle inside of it with a radius of 4, what is the probability of hitting the smaller circle with a dart
I got 0.132 but it was wrong.
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06/07/18

Assume you get an average of 2 texts per hour on a weekend. Find the probability that in any one hour interval there will be:
a.) 0 textsb.) Exactly 2 textsc.) At most 3 texts **Show your work for each part of the problem, please!
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06/05/18

Can you please solve this as I don’t understand
Bob has 30 sweets He has  18 fruit sweets 7 aniseed sweets 5 mint sweets   Bob is going to tak out two random sweets what is the probability the two sweets will not be the same type of sweet
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06/05/18

a bag contains tiles with the numbers 1, 3, 5, ,7 and 9. what is the probability of taking out a tile with an even number
describe the probability of a chance event
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05/26/18

Probability of winning raffle with multiple tickets (max one win each)
I have 90 tickets in a raffle.20,000 people have bought tickets.Each person has bought between between 60 and 100 tickets.The total number of tickets sold is 1,360,000 giving an average of 68... more
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05/24/18

If randomly selected student is in the math team, what is the probability that they are also in the debating club
In a group of 30 students it is found that 6 students belong to both the math team and debate club, 9 belong to the math team only and 7 belong to the debating club only.
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05/16/18

how many different signals can be made with 5 flags from 8 of different colors?
 math help!!
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05/09/18

Mostly confused on how to find the sum of "at least" 5.
Suppose you randomly draw two cards from a standard deck and roll a pair of dice. Determine the probability that you draw 2 black cards and roll a sum of at least 5. 
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05/06/18

A High school baseball player has a 0.321 batting average. (This means the probability that they will get a hit in any one at-bat is 0.321)
A High school baseball player has a 0.321 batting average. (This means the probability that they will get a hit in any one at-bat is 0.321). In one game, the player gets 7 at-bats. What is the... more
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