5,401 Answered Questions for the topic probability

Probability Math Statistics Logic

09/18/20

how many guesses should you expect to make to guess the secret word?
In Guess My Word each day, there is a secret word, and you try to guess it as efficiently as possible by typing in other words. After each guess, you are told whether the secret word is... more
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Probability Statistics

09/18/20

The probability that an event will happen is P(E)=16/23. Find the probability that the event will not happen.
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Probability Math

09/17/20

If a patient chosen at random is known to smoke, what’s the probability they have lung cancer?
At a certain hospital, 45 patients have lung cancer, 35 patients smoke, & 30 have lung cancer & smoke. Suppose the hospital contains 225 patients. If a patient chosen at random is known to... more
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Probability

09/17/20

What is the probability that two of the marbles are red when drawn?
A bag contains 9 red marbles, 7 white marbles, and 7 blue marbles. You draw 5 marbles out at random, without replacement. What is the probability that all the marbles are red? Can you show me how... more
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Probability Integral Calculus

09/16/20

Please can anyone solve 1(a) and 1(b). I need help. Thank you in advance.
Probability theory tells us that if the average time between events is k, the probability that x, the time between events, is between a and b is given by,P(a ≤ x ≤ b) = ∫ ba f(x) dx ------ equation... more
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09/16/20

Math in the modern world
Alan, Ben and Carl collect NBA cards. They exchange cards amongthemselves. According to the following scheme: Alan gives Ben as manycards as Ben has and Carl as many cards as Carl has. After that,... more
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Probability

09/15/20

You choose a marble at random from a bag containing 2 red marbles, 4 green marbles, and 3 blue marbles. Find each probability
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Probability

09/14/20

A coin is tossed and an eight - sided die numbered 1 through 8 is rolled . Find the probability of tossing a tail and then rolling a number greater than 5

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Probability

09/14/20

Probability Question
A computer breaks down 25% of the time and is operational 75% of the time. What is the smallest number of independent computers that must be running so that there is atleast a 99% chance that at... more
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09/13/20

Probability of correct message sent over network
We wish to transmit an n-bit message to a receiving agent, which is the case for the low-level messaging on most computer networks. Unfortunately, no network technology is perfect, and it is... more
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Probability

09/13/20

expected value probability
You are selling security insurance services to a small business, and wish to know how to price your policy. In particular, you will reimburse the client for the costs of any attack that... more
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Probability Math Statistics

09/13/20

What is the probability?
Once a week, folks from Blacksburg, Greensboro, and Silver Spring get together for a game of pickup basketball. Every week, anywhere from one to five individuals will show up from each town, with... more
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Probability Statistics

09/13/20

Probability of two people authenticating as the same person
Suppose that a system is designed to detect N different “features” of a fingerprint, and each of these features can take on D different values. Further, assume that for any given fingerprint these... more
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Probability

09/12/20

What’s the probability of obtains exactly two tails on the tosses?
A penny, a nickel , a dime & a quarter are tossed.
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Probability

09/12/20

What’s the probability that the student selects the correct answer on all of the questions?
Each question of a 5 question multiple choice exam has 4 possible answers. Suppose a student picks an answer at random for each question.
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Probability

09/12/20

What’s the probability that all 5 selected are women?
An executive committee consists of 15 members: 7 men & 8 women. 5 members are selected at random to attend a meeting in Hawaii. The names are drawn from a hat.
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Probability

09/12/20

What’s the probability of a marble being red, not yellow, either red or green & neither red nor green?
A marble is selected at random from a jar containing 5 red marbles, 2 yellow marbles & 3 green marbles. What is the probability that a)the marble is redb)the marble is not yellowc)the marble is... more
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Probability Math Algebra 2

09/10/20

Probability with dice question
Q: Find the probability of rolling 2 odd numbers or a sum of 10 when a pair of dice is rolled.I have no idea how to solve/start this so any help is appreciated!
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Probability

09/09/20

Probability of winning a week
I am in an NFL Pickem League. I am 1 of 31 participants. Assuming we all have an equal shot at picking the games correctly what is the probability that I will win at least 1 week out of the 17... more
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Probability

09/08/20

A question about normal distribution and how to get a percentage
The life of a fully-charged cell phone battery is normally distributed with a mean of 14 hours with a standard deviation of 1 hour. What is the probability that a battery lasts at least 13 hours?
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Probability

09/08/20

Statistics and Probability
Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.572.57 and a standard deviation of 0.430.43. Using the empirical rule,... more
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Probability

09/07/20

Find the probability of the event of the​ date's being each of the following.
A date in the month of June is chosen at random. Find the probability of the event of the​ date's being each of the following.a.June10 ,b.June31, c. Before June 24
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Probability

09/07/20

What is the probability that an employee chosen at random is a​ secretary, given that the person is a male​?
There are 48 employees in a certain firm. We know that 36 of these employees are​ male, 6 of these males are​ secretaries, and 12 secretaries are employed by the firm.
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Probability

09/07/20

Find the probability the student selects the correct answer on all of the questions.
Each question of a​ 5-question multiple choice exam has 4 possible answers. Suppose a student picks an answer at random for each question.
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Probability

09/07/20

What’s the probability that the ball isn’t Brand B?
A total of 15 basketballs, including 6 brand A, 5 brand B, and 4 other brand-name balls are on a basketball court. Barry closes his eyes and arbitrarily picks up a ball from the court. What’s the... more
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