42 Answered Questions for the topic Probability Distribution

05/24/21

#### Question about average thickness, standard deviation and probability distribution

Each manufacturer of sliced bread has to choose how thin to slice their bread. It turns out that sliced bread in the US has an average thickness (μ) of 9.2mm, a standard deviation (σ) of 2.5mm, and...
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Probability Distribution

06/01/20

#### Please help out

A financial analyst has found out that,policy holders are four times as likely to file two claims as to file four claims.If the number of claims filed has a Poisson distribution,what is the...
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Probability Distribution

06/01/20

#### Please help out

A random variable X has poisson distribution with mean equal to 0.4.what is the probability that the random variable is greater than Zero?

Probability Distribution

06/01/20

#### Please can get aid on this

A discrete random variable has probability mass function,P(X=n)= (1/2)nlet Y= {1, For x is even -1, For x is odd}find the expected value of Y; (E[y])

Probability Distribution

07/24/19

#### A group of people were asked if they owned a dog. 205 responded "yes", and 273 responded "no". Find the probability that if a person is chosen at random, they own a dog.

Probability Distribution Probability

07/22/19

#### A salesperson estimates that 30% of people make a purchase. Determine the probability distribution for the possible number of sales made for the first five people who enter the store.

Probability Distribution Probability

07/21/19

#### A trivia test has 10 multiple-choice questions, each with four possible answers. What is the probability of randomly guessing the correct answers for 9 or 10 of the questions.

Probability Distribution Probability

07/21/19

#### The odds in favour of Jack being on time for this Data Management class are 1:8. What is the probability that Jack will be on time for the next three classes?

Probability Distribution Probability

07/21/19

#### From 5 cats and 7 dogs in a pet shop, 4 pets are chosen at random for a visit to a children’s hospital. What is the expected number of cats chosen?

Probability Distribution Probability

07/21/19

#### A bank found 25% of its loans If 20 small businesses are randomly selected from the bank’s files, what is the probability that three of them are delinquent?

Probability Distribution

06/11/19

#### Find the probability

Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 97 people in the 18-21 age bracket and finds that 82 of them respond and 15...
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Probability Distribution

10/03/18

#### If the probability distribution for the random variable X is given in the table, what is the expected value of X?

If the probability distribution for the random variable X is given in the table, what is the expected value of X?
Xi -3, 1, 4
Pi .4, .5, .1
E(X)=

09/21/18

#### I need help with 1) Y~B(10, 0.5) Compute P(1<Y<4)= 2) Mean of 𝑥 =10, Variance of 𝑥 =16 and 𝑥 has a Normal Distribution Pr(5< 𝑥 <17)=?

i need a help with my question for homework . i need help because the professor went a quit fast in the online class. he doesn't provide good example. If anyone wanna explain it to me to how to do...
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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?

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...
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Probability Distribution

05/22/18

#### Discrete Random Variable

Could you please help me with the following question
Question: Is the following a Discrete Random Variable? If not, give a reason.
P(X=x) = x/6, where X = 0, 1, 2, 3
Thank you in advance

Probability Distribution Permutation And Combination

04/03/18

#### Find how many 4 digits numbers can be formed from the 6 digits, 2,3,5,7,8, and 9, without repeating any digit.

Also find how many of these numbers are; a) Less than 7,000 b) Odd

01/27/18

#### Easy question however, I somehow can't do it

a pupil travels to school either by MRT or by bus. Th probability that the pupil will be late for school is 1/12 if he travels by MRT and 1/9 if he travels by bus. a) if he travels by bus on two...
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Probability Distribution

02/16/17

#### what is the value of P(X=2 or X =0)

using probability distribution table.

12/15/16

#### Discrete probability distributions

If you select a red diamond picture card (i,e.) a card that doesn't have a number on it) you win $100. It costs $10 to play this game. What is your expected earnings? if you played this game 10,000...
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Probability Distribution

06/11/16

#### Probability distribution question

You play a game of rolling 2 dice. You lose the game if you roll an 11 before you roll a 7. You continue to roll until either an 11 or 7 appear. What is the probability that you will lose the game...
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Probability Distribution

05/07/16

#### Finding a distribution

Hey, I'm having trouble understanding the following question:Consider the random variable X that can take on the values1, 2, 3, 4, and 5. Assume that the numbers are equallylikely. Hence the...
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Probability Distribution Probability Stats

04/30/16

#### Probability Distribution

The probability distribution for a random variable x is given in the table. find the probability that x≥ 5.
x -10,-5, 0, 5, 10, 15, 20
Probability .20, .15, .05, .1, .25, .1, .15

Probability Distribution

04/30/16

#### Multivariate normal distribution

1. Suppose that (i) ε ∼ N(0,σ2); (ii) X∼N(μ,τ2); (iii) ε⊥X; (iv) Y =α+βX+ε. (a) Find the conditional distribution of Y given X = x. This is the answer: (a) Y|X=x∼N(α+βx,σ2)But I have no idea how to...
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Probability Distribution

04/17/16

#### Three people are selected at random from eight men and six women. The random variable is the number of man selected.

Question is from Finite Math

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