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Probability and Statistics
Page 6
Questions (4,622)
Four quilters are preparing patches for a quilt. When finished, the quilt will contain 200 patches. The quilters’
3 answers
asked by
chris
634 views
Each phone call by Ali consumes an amount of time that follows an exponential distribution with mean 5 minutes. The number of
23 answers
asked by
Alpha
3,540 views
In a large crowd,there are three times as many men as women.
Three people are chosen at random. Assuming there are so many people
3 answers
asked by
Esther
354 views
a)One game in a state lottery requires you to pick 1 heart, 1 club, 1 diamond, and 1 spade, in that order, from the 13 cards in
4 answers
asked by
Matthew
2,220 views
The water supply in a town depends entirely on two pumps. A and B. The probability of pump A filling is 0.1 and the probability
4 answers
asked by
kudu
1,180 views
Kirk and Les regularly play each other at darts. The probability that Kirk wins any game is 0.3 and the outcome of each game is
2 answers
asked by
Anonymous
1,309 views
Determine a casino's expected net income from a 24-hour period at a single roulette table if the casino's total overhead for the
1 answer
asked by
CARMEN
1,009 views
The probability is 0.7 that a person shopping at a certain store spend less than $20.00. For groups size of 22, find the mean
1 answer
asked by
john
1,201 views
Pick a Card.
Mike and dave play the following card game. Mike picks a card from the deck If he selects a heart Dave gives him $5,
2 answers
asked by
Adie
873 views
The amount of time a certain brand of light bulb lasts is normally distributed with a mean of 1200 hours and a standard
1 answer
asked anonymously
28 views
In a Poisson distribution P(X=x) for x=0 is 10%. Find the (Log 102.3026.) mean and P(X<3),
1 answer
asked by
Rajesh
14 views
Compound Events Portfolio Worksheet
Directions: Use this worksheet to record your answers to the two Compound Events portfolio
3 answers
asked by
hi
69 views
Permutation(s) Combination(s) Example of _________ of two things from three total choices "a", "b", and "c" is "ab", "bc", "ca"
1 answer
asked anonymously
17 views
oddsnoun
the chances or likelihood that one thing will happen rather than another thing. I hope I will win the race, but the odds
1 answer
asked anonymously
16 views
Use the image to answer the question. The box plot represents the hourly wages for a group of teenagers working their first
1 answer
asked by
anyone
23 views
Consider n independent rolls of a k-sided fair die with k≥2: the sides of the die are labelled 1,2,…,k and each side has
5 answers
asked by
JuanPro
7,551 views
Let X be an exponential random variable and let Y=aX+b . The random variable Y is exponential if and only if (choose one of the
5 answers
asked by
luli
1,973 views
t the discrete random variable X be uniform on {0,1,2} and let the discrete random variable Y be uniform on {3,4}. Assume that X
7 answers
asked by
JuanPro
6,578 views
Let X be a non-negative random variable. Find the PDF of the random variable Y=lnX for each of the following cases:
For general
3 answers
asked by
navneethc
4,586 views
Every person has a random number of children, drawn from a common distribution with mean 3 and variance 2. The numbers of
4 answers
asked by
Muhammad
2,369 views
Let K be a discrete random variable that can take the values 1 , 2 , and 3 , all with equal probability. Suppose that X takes
5 answers
asked by
ANON
2,429 views
The bias of a coin (i.e., the probability of Heads) can take three possible values, 1/4 , 1/2 , or 3/4 , and is modeled as a
5 answers
asked by
Anil07
2,948 views
Consider the same stick-breaking problem as in the previous clip, and let l=1. Recall that fX,Y(x,y)=1/x when 0<=y<=x<=1.
a)
5 answers
asked by
maria
1,471 views
As in the previous exercise, let È be the bias of a coin, i.e., the probability of Heads at each toss. We assume that È is
5 answers
asked by
alec
5,371 views
Let Θ be a continuous random variable that represents the unknown bias (i.e., the probability of Heads) of a coin.
a) The prior
4 answers
asked by
Anonymous
3,607 views
Let Θ1 and Θ2 be some unobserved Bernoulli random variables and let X be an observation. Conditional on X=x, the posterior
5 answers
asked by
SPS
4,125 views
Of 500 employees of a firm 280 have a life insurance policy ,400 have a medical insurance cover and 200 participate in both
5 answers
asked by
Jackie
3,337 views
Let È be the bias of a coin, i.e., the probability of Heads at each toss. We assume that È is uniformly distributed on [0,1].
4 answers
asked by
alec
5,067 views
Amy immigrated to a new city, and would like to make friends with her new neighbours.
On any particular day i, she feels shy with
13 answers
asked by
Mona
3,757 views
Suppose that X has a PDF of the form
f(x) {1/x^2 if x>= 1 { 0 otherwise For any x>2, the conditional PDF of X, given the event
5 answers
asked by
Sam
4,230 views
Sophia is vacationing in Monte Carlo. On any given night, she takes X dollars to the casino and returns with Y dollars. The
6 answers
asked by
amar
7,355 views
Let X and Y be two normal random variables, with means 0 and 3 , respectively, and variances 1 and 16 , respectively. Find the
4 answers
asked by
Adam
4,604 views
Solve the following defective rate problem using the concepts learned about the geometric distribution.
A machine that produces a
3 answers
asked anonymously
614 views
The random variables X and Y are jointly continuous, with a joint PDF of the form
fX,Y(x,y)={cxy,if 0≤x≤y≤1 0,,otherwise,
4 answers
asked by
pentium
2,413 views
Let X,Y,Z be independent discrete random variables with E[X]=2, E[Y]=0, E[Z]=0, E[X^2]=20, E[Y^2]=E[Y^2]=16, and
6 answers
asked by
Anonymous
3,153 views
For borrowers with good credit scores, the mean debt for revolving and installment accounts is $15,015 (BusinessWeek, March 20,
5 answers
asked by
Mia
6,049 views
This figure below describes the joint PDF of the random variables X and Y. These random variables take values in [0,2] and
5 answers
asked by
RVE
7,943 views
For each one of the following figures, identify if it is a valid CDF. The value of the CDF at points of discontinuity is
4 answers
asked by
RVE
4,226 views
Of 120 students, 60 are studying French, 50 are studying Latin and 20 are studying French and Latin. Find the probability that a
7 answers
asked by
Carline
7,763 views
Let N be a random variable with mean E[N]=m, and Var(N)=v; let A1, A2,… be a sequence of i.i.d random variables, all
4 answers
asked by
Anonymous
5,187 views
Let Θ be a Bernoulli random variable that indicates which one of two hypotheses is true, and let P(Θ=1)=p. Under the
9 answers
asked by
A
7,572 views
A company estimates that 0.4% of their products will fail after the original warranty period but within 2 years of the purchase,
5 answers
asked by
tatiana
5,603 views
A customer at Cavallaro’s Fruit Stand picks a sample of 3 oranges at random from a crate containing 60 oranges, of which 4 are
4 answers
asked by
Brandon
4,403 views
Someone please help
2. You toss a coin 15 times. P(heads) 2/5 = • experimental; the result is found by repeating an experiment.
10 answers
asked by
Oscar
3,300 views
The average age of doctors in a certain hospital is 50.0 years old. Suppose the distribution of ages is normal and has a
4 answers
asked by
giovanny
3,511 views
A bag contains 5 green marbles , 8 red marbles, 11 orange marbles, 7 brown marbles, and 12 blue marbles. You choose a marbles,
7 answers
asked by
InDireNeedOfHelp
6,107 views
The random variable X is uniformly distributed over the interval [θ,2θ]. The parameter θ is unknown and is modeled as the
11 answers
asked by
A
8,811 views
In 1898 L. J. Bortkiewicz published a book entitled The Law of Small Numbers. He used data collected over 20 years to show that
5 answers
asked by
Ashley
3,201 views
For each one of the following statements, indicate whether it is true or false.
(a) If X = Y (i.e., the two random variables
2 answers
asked by
silly_muffin
164 views
The random variables X and Y are jointly continuous, with a joint PDF of the form
fX,Y(x,y)= {cxy if 0≤x≤y≤1 0 otherwise}
4 answers
asked by
pentium
566 views
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