5,395 Answered Questions for the topic probability

Probability Statistics

12/13/21

A test was given to a group of students. The grades and major are summarized below. (New to this so full questions is uploaded to this screenshot) https://prnt.sc/22v7ooq
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Probability Math Geometry Algebra

12/13/21

Joselyn and Tanya are on a swim team. The table below shows the probabilities of the team winning or losing when the team is playing away or is playing at home.

Are the events “winning” and “playing at home” independent?  (5 points)     Show all of your work proving your statement ... more
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12/13/21

Expected number of becoming good friends
Consider a group of people. There are 500 people in the a room. If we put them altogether inside a room for 1 hour, each pair of people has a 1 in 10000 chances of making friends together and... more
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Probability Math

12/13/21

Assigning Probability
Let S be the sample space for when a coin is flipped 8 times in a row and heads or tails isrecorded, but we only write down the cases where the final flip is heads. What is N?Question from one of... more
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Probability

12/10/21

The sample includes 30% of women and 70% of men. It is known that among them 10% of women and 60% of men smoke. Person X is known to be a non-smoker. Find the probability that X is male.
The sample includes 30% of women and 70% of men. It is known that among them 10% of women and 60% of men smoke. Person X is known to be a non-smoker. Find the probability that X is male.
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Probability

12/09/21

4.A candy store has Snickers, Milky Way, Three Musketeers, Twix, and Rocky Road candy bars for sale. How many ways are there to select 16 candy bars to purchase?
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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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