5,395 Answered Questions for the topic probability

05/20/20

Hard disks for computers must spin evenly, and one departure from level is called roll. Probability and Statistics

Hard disks for computers must spin evenly, and one departure from level is called roll. The roll for any disk can be modeled as a normal random variable with mean 0.1240 mm. 16 random sample disks... more
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Probability Science Statistics

05/20/20

A random sample of 36 seventh grade students in Harvard are given an exam on a reading test. Below are their raw scores.
73, 77, 80, 80, 84, 86, 91, 93, 93, 93, 94, 97, 100, 100, 103, 103, 104, 105, 105, 106, 108, 110, 111, 117. 120, 120, 123, 124, 126, 128, 129, 129, 130, 130, 136Sample mean =... more
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Probability

05/19/20

Three number cubes are rolled and the results are added. what is the probability that the sum is equal to 3?

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Probability Binomial

05/19/20

A medicine heals 60% of the patients. 10 sick people get this medicine...
A medicine heals 60% of the patients. 10 sick people get this medicine.a) What is the probability that all 10 people are cured?b) What is the probability that at least 1 of the people is cured?c)... more
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Probability Mathematics

05/19/20

probability question of 200 level course
Ninety identical electrical circuits are monitored at an extreme temperature to see how long they last before failing. The 50th failure occurs after 263 minutes. If the failure times are modeled... more
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Probability

05/18/20

What is the experimental probability of rolling a 6

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Probability Math

05/17/20

Probability - Mallory rolls a six-sided die and Rose flips a coin.

Mallory rolls a six-sided die and Rose flips a coin. What is the probability of the girls getting tails and an odd number? Use multiplication to get your answer.
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Probability Math Algebra 1 Algebra 2

05/17/20

Algebra homework help probability and odds
Problem : Jason gets two chances to roll a sum of 8 with the two dice. To further clarify, he can win by either rolling an 8 on his first roll, and if he fails to roll an 8 on his first roll, he... more
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Probability Math Statistics

05/17/20

Don't understand how to find expected value

Consider the following scenario.the five-number bet(a) Find the expected value of each $1 bet in roulette. (Round your answer to three decimal places.)  (b) Interpret it. (Round your answer to one... more
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Probability

05/16/20

What's the probability of bowler takes no wicket in below question?
On an average, a bowler takes a wicket every 8 overs. If bowler bowls 10 overs, what is the probability that the bowler succeeds in taking no wicket in those overs.
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Probability

05/16/20

Maths question probability
urn - A contains 5 red and 5 black balls ; urn-B contain 4 red balls and 8 black balls ; urn - C contains 3 red and 6 black balls. one urn is chosen at random and a ball is drown. the colourbof the... more
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Probability Math Statistics Logic

05/16/20

A real doozy - which situation produces the highest expected roll?
The fifth edition of Dungeons & Dragons introduced a system of “advantage and disadvantage.” When you roll a die “with advantage,” you roll the die twice and keep the higher result. Rolling... more
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Probability

05/15/20

Laura has three friends what is the probability she plays with only her 2 best friends?
Laura has three friends, what is the probability she plays with just 2?
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Probability Math Algebra 1 Algebra 2

05/14/20

Odds Probability
Problem : a) If the sum of the two dice is taken, what is the probability of rolling each possible sum ?b) What is the odds against rolling each possible sum ?
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Probability Math Algebra 1 Algebra 2

05/14/20

Odds probability
Problem : Jason gets two chances to roll a sum of 8 with the two dice. To further clarify, he can win by either rolling an 8 on his first roll, and if he fails to roll an 8 on his first roll, he... more
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Probability Statistics

05/14/20

Probality and Statistics
A driver comes to pick up members of your family for a family reunion. The van holds 7 people, not including the driver. Assuming that none of the babies will be riding in the van, how many... more
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Probability Statistics

05/14/20

solve this question !!
A company makes car batteries and claims 80% of its ABC batteries are good for 70 months orlonger. Assume that this claim is true. Let ˆp be the proportion in a sample of 100 such ABCbatteries.... more
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Probability

05/13/20

A pet store has 13 ​puppies, 4 ​poodles, 4 ​terriers, and 5 retrievers.

If Rebecka selects one puppy at​ random, the pet store replaces the puppy with a puppy of the same​ breed, then Aaron chooses a puppy at random. Find the probability that they both select a poodle.
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05/13/20

Probability: Or Question Without Replacement in a Deck of Cards
What is the probability of drawing a Queen or Heart, not replacing it, then drawing a Five Card?
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Probability

05/13/20

What are the chances of seven hits out of seven trials on a 15% chance?
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05/13/20

A teacher-student committee consisting of 4 people is to be formed from 5 teachers and 20 students. Find the probability that the committee will consist of at least one student.
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Probability Math Statistics Economics

05/13/20

The table below gives the bushels of corn per acre resulting from the use of various amounts of fertilizer in pounds per acre:
n (1st column) BUSHELS OF CORN PRODUCED (Y) (2nd column) AMOUNT FERTILIZER USED (X) (3rd column) 1 (n) 4 (y) 6 (x) 2 44 10 3 46 12 4 48 ... more
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Probability Math Algebra 2 Algebra

05/13/20

Please help me, need to know how to do this problem, please I’m desperate

This season, the probability that the Yankees will win a game is 0.49 and theprobability that the Yankees will score 5 or more runs in a game is 0.53. Theprobability that the Yankees win and score... more
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Probability

05/13/20

What are the odds against you choosing a person from the children or teen category? (children group has 3), (teen group has 2) (young adult group has 2) , (adult group has 5), (senior group has 3)
Can you please show the steps? Thank you.
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Probability Statistics

05/13/20

Solve this problem
The average age of a breed of dog is 19.4 years. If the distribution of their ages is normal and20% of dogs are older than 22.8 years, find the standard deviation.
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