5,385 Answered Questions for the topic probability

Probability

12/09/21

LSAT test scores are normally distributed with a mean of 152 and a standard deviation of 5. What score would place you in the top 2% of test-takers? (Round your answer to the nearest whole number.)
You may need to use the appropriate appendix table or technology to answer this question.LSAT test scores are normally distributed with a mean of 152 and a standard deviation of 5. What score would... more
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Probability

12/07/21

If A and B are events such that P(A)=1/2, P(B)=1/3 and P(AuB)=2/3. Find P(B'/A)
Anyone know probability, I'm really stuck on this one..... I need help
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Probability

12/07/21

What is the mean of the set {4,9,18,8,10}?
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Probability Statistics

12/05/21

Help me find the probability this man’s weight please
Noel, a 35 year old office worker, has been struggling with his weight for a long time. He is looking to start dating again, so earlier this year he decided to join a gym. A few days ago he noted... more
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Probability

12/05/21

Confused on how to approach this
have three errands to take care of in the Administration Building. Let Xi = the time that it takes for the ith errand (i = 1, 2, 3), and let X4 = the total time in minutes that I spend walking to... more
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Probability

12/04/21

A certain lottery has 36 numbers in how many different ways can four of the numbers be selected
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Probability

12/03/21

Probability confusion

A certain automobile manufacturer equips a particular model with either a six-cylinder engine or a four-cylinder engine. Suppose the fuel efficiencies (mpg) for six-cylinder and four-cylinder cars... more
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Probability

12/03/21

Confused how to do this probability question
The hourly median power (in decibels) of received radio signals transmitted between two cities follows a lognormal distribution with parameter values u = 3.5 and o(sigma)=1.2a. What is the 90th... more
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12/03/21

Scientific Reasoning Questions
1.Give an example in which dominance reasoning recommends a certain action where maximizing expected utility recommends an incompatible action. 2. Describe how Ramsey proposes to assign numerical... more
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Probability

12/03/21

probability assignment

A jar contains 6 pennies, 14 nickels,16 dimes, and 4 quarters. If onecoin is chosen at random, findeach probability.P(worth at least 5 cents)
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Probability Statistics

12/02/21

what is the probability that the sum of the dices is 4 ?
in an experiment, a ball is drawn from a box containing 7 green balls and 10 orange balls. if the ball is green, two dice are rolled. if the ball is orange, three dices are rolledwhat is the... more
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Probability

12/02/21

The question is asking what grade she will get
Scores on a recent exam followed a normal distribution and letter grades will be assigned with 15% A, 35% B, 30% C, 15% D, and 5% F. Suppose that Sue took the exam and had a standardized score of... more
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Probability

12/01/21

probability question
A company's sales force makes 350 sales calls, with 0.20 probability that sale will be made on a call. What is the probability that more than 70 will be made  (round to the nearest 4 decimal places)?
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Probability

12/01/21

probability question
A company's sales force makes 350 sales calls, with 0.20 probability that sale will be made on a call. What is the probability that fewer than 70 will be made  (round to the nearest 4 decimal places)? more
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Probability Statistics

12/01/21

Probability normal distribution
A hospital is trying to improve quality in every area. One of the metrics they look closely at is the quality of physicians. Several individual measurements contribute to a physician's quality... more
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Probability

12/01/21

Probability rolling dice
Let's say you were to roll a dice 30 times. What is the number of times you would expect the number 2 to appear?
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Probability

11/30/21

Probability die roll is 4 or less
The teacher rolls 2 dice. What is the probability that the sum will be 4 or less?
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Probability

11/29/21

Probability and statistics

Let Zn,n 2 1, be a sequence of random variables and ca constant such that for each ɛ > 0, P{|Z, – c| > ɛ}→ 0 as n → o. Show that for any bounded continuous function g, E[g(Zn)] → g(c) as n → 00
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Probability Math

11/27/21

Johan has a fake coin. There is a 90% chance of getting a piano and a 10% chance of get the crown.
What is the probability that he gets the piano twice in a row?
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Probability

11/27/21

A charity raffle told people that they should expect to win at least $4 for every ticket they purchase.
A charity raffle told people that they should expect to win at least $4 for every ticket they purchase. There were two $50 gift certificates, seven $20 gift certificates, and eleven $15 gift... more
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11/27/21

What is the probability that the amount of cashew nuts, in a randomly selected packet sold by this company, is between 117.5 grams and 120 grams
The amount of cashew nuts per packet (𝑌), sold by a company, can be modelled using a normal random variable with a mean of 115.0 grams and a variance of 4.0 grams.
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Probability Math Statistics

11/27/21

What is the probability that the amount of cashew nuts, in a randomly selected packet sold by this company, is more than 113 grams?
The amount of cashew nuts per packet (𝑌), sold by a company, can be modelled using a normal random variable with a mean of 115.0 grams and a variance of 4.0 grams.
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11/25/21

Find the probability if a couple to have 3 children that will be unaffected by Tay-Sachs disease
what is the probability that if the couple has three children, none of them will be affected by the syndrome. refer to the attached picture and show solution.is it 107/144? can you verify my... more
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Probability

11/20/21

Probability Leo pulled out pencils from his pencil case and then put them back in 30 times.he record the results in this chart: orange:7,purple 15, black 5,green3
If had 10 pencils in his pencil case,how many of each coloured pencil is he likely to have in his pencil case?
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Probability Mathematics

11/19/21

What is the probability that a group of five friends all have different birthdays?
type of problem: (counting methods and probability) (probability of an event not occurring given multiple opportunities.)
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