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Probability and Statistics
Page 9
Questions (4,630)
Let Θ1 and Θ2 be some unobserved Bernoulli random variables and let X be an observation. Conditional on X=x, the posterior
3 answers
asked by
akg
1,246 views
Let X, Y, Z, be independent discrete random variables.
Let A= X(Y+Z) and B= XY With A, B, X, defined as before, determine wheter
4 answers
asked by
P
1,524 views
Alice has five coins in a bag: two coins are normal (i.e., fair with one face Heads and the other face Tails), two are
7 answers
asked by
qwerty
1,309 views
As on the previous page, let X1,…,Xn be i.i.d. with pdf
fθ(x)=θxθ−11(0≤x≤1) where θ>0. (a) 2 puntos posibles
2 answers
asked by
Juanpro
633 views
You have been hired as the quality control office of a pharmaceutical company that manufactures aspirin tablets. According to
7 answers
asked anonymously
101 views
We are given a biased coin, where the probability of Heads is q. The bias q is itself the realization of a random variable Q
5 answers
asked by
Anonymous
1,932 views
The newest invention of the 6.041x staff is a three-sided die. On any roll of this die, the result is 1 with probability 1/2, 2
5 answers
asked by
qwerty
7,545 views
The random variables delta and X are described by a joint PDF which is uniform on the triangular set defined by the constraints
28 answers
asked by
Ramya
131 views
1. the probability of a basketball player hitting a foul shot is 1/3. how many shots would you expect her to make in 90
5 answers
asked by
Anon
3,843 views
Let K be a Poisson random variable with parameter λ : its PMF is
pK(k;λ)=λke−λk!,for k=0,1,2,…. What is the ML estimate
4 answers
asked by
bob
3,357 views
Random variables X and Y are distributed according to the joint PDF
fX,Y(x,y) = {ax,0,if 1≤x≤2 and 0≤y≤x,otherwise. 1
3 answers
asked by
JuanPro
963 views
The probabilities that john and joseph pass an examination is 3/4 and 3/5 respectively. Find the probability that both boys
4 answers
asked anonymously
90 views
There are 219 people at science camp. 112 people are enrolled in chemistry class and 45 people are enrolled in the physics
10 answers
asked by
Mason Cons
169 views
During an experiment, three coins were tossed at once. Part A: Give the sample space to show all possible outcomes for tossing
2 answers
asked by
John B
166 views
Let X and Y be independent random variables, each uniformly distributed on the interval [0,1]
a) Let Z = max{X,Y}. Find the PDF
2 answers
asked by
silly_muffin
139 views
A fair dice with face numbered 1,2,3,4,5,6 is thrown twice.what is the probability of obtaining a prime from each throw
2 answers
asked by
Sola
110 views
One bag contains 2 yellow and 3 red balls , another 3 Yellow is and 4 red balls,one ball is drawn from each bag.what is the
2 answers
asked by
Sola
95 views
The lifetime (in months) of a battery is modeled by a random variable X that has pdf
\displaystyle \displaystyle f_\theta
10 answers
asked anonymously
233 views
The lifetime (in months) of a battery is modeled by a random variable X that has pdf
\displaystyle \displaystyle f_\theta
6 answers
asked anonymously
206 views
In one town, 70% of adults have health insurance. What is the probability that 6 adults selected at random from the town all
2 answers
asked anonymously
127 views
In one town, 70% of adults have health insurance. What is the probability that 6 adults selected at random from the town all
2 answers
asked anonymously
121 views
If we randomly select one of the customers represented in the table, estimate the probability that the waiting time is between 8
2 answers
asked anonymously
124 views
Michael wants to take French or Spanish or both But classes are closed, and he must apply and get accepted to be allowed to
2 answers
asked anonymously
133 views
It a salesperson is chosen at random the probability that his potential for advancement is Good given that his Sales Ability is
2 answers
asked anonymously
107 views
Another question. The law of iterated expectations tells us that E[E[X/Y]] = E[X]. Suppose that we want apply this law in a
4 answers
asked by
silly_muffin
99 views
As in the last video, let X=\Theta +W, where \Theta and W are independent normal random variables and W has mean zero.
a) Assume
2 answers
asked anonymously
152 views
Suppose that \Theta takes values in [0,1] and its PDF is of the form
f_{\Theta }(\theta )= a\theta (1-\theta )^2,\ \ \
2 answers
asked anonymously
230 views
Let X be an exponential random variable and let Y = a*X + b. What are the conditions for Y to be exponential?
7 answers
asked by
silly_muffin
101 views
This figure below describes the joint PDF of the random variables X and Y. These random variables take values in [0,2] and
4 answers
asked by
silly_muffin
160 views
A sample of 125 is drawn form population with proportion equal to .065 determine the probability of success
A 80 or fewer
2 answers
asked by
Birhanu
133 views
The expected value of a non-negative continuous random variable X, which is defined by
E(X) = ∫ x * fx(x) dx with lower limit 0
2 answers
asked by
silly_muffin
109 views
The random variables X and Y are distributed according to the joint PDF:
The joint PDF has the value of a*x^2 if 1 <= x <= 2 and
2 answers
asked by
silly_muffin
115 views
The random variables X and Y are distributed according to the joint PDF:
It has the value of a*x^2 if 1 <= x <= 2 and 0 <= y <=
4 answers
asked by
silly_muffin
159 views
[mathjaxinline]\, X_ i \,[/mathjaxinline] follows a shifted exponential distribution with parameters [mathjaxinline]\, a \in
4 answers
asked anonymously
125 views
Let 𝑋∼𝖤𝗑𝗉(𝜆), 𝜆>0. What is the moment generating function (MGF) 𝑀𝑋(𝑡) of 𝑋?
exp(−𝜆𝑡)
2 answers
asked anonymously
99 views
Let Y be a normal random variables, with mean 3 and variance 16.
Let V = (4-Y)/3 Find the variance of V
2 answers
asked by
silly_muffin
133 views
1, 40% of the days tibs are available in the banchs cafeteria. Abdul is eating in banchs cafeteria for 10 days.
B, what is the
2 answers
asked by
Zed smart
116 views
1,assume test consists of 10 multiple choice questions with having 4 answer possibilities if students randomly guesses all
2 answers
asked by
Zed smart
137 views
Suppose that X_1=\Theta +W_1 and X_2=2\Theta +W_2, where \Theta ,W_1,W_2 are independent standard normal random variables. If
2 answers
asked anonymously
176 views
Please show your work
5. Teesha is in the french club. There are 19 students in the club. The French teacher will pick two
7 answers
asked by
kiki
139 views
A sample of 125 is drown population with proportion equal to.065. determine the probability of observing
A 80 or fewer successes
2 answers
asked by
Birhanu
85 views
Jacob mixes the letters J, K, L, J, K, M, N, and P thoroughly. Without looking, Terry draws one letter. Expressed as a fraction,
25 answers
asked by
hbfifedfh
172 views
bot answer this question Eva wants to know the probability of tossing “heads” at least three times out of five. She used the
6 answers
asked by
hbfifedfh
103 views
Jeremy decides to roll a die and toss a coin make a tree diagram
2 answers
asked anonymously
108 views
If a plate of a car consists of two letters and four digits and one car is chosen at random, then find the probability that the
2 answers
asked by
Abraham
165 views
As in the last video, let X=delta+W, where delta and W are independent normal random variables and W has mean zero.
1. Assume
2 answers
asked by
Azerbaijan
148 views
As in the last video, let X=delta+W, where delta and W are independent normal random variables and W has mean zero.
1. Assume
2 answers
asked by
Ramya
135 views
Suppose that in a town, 800 people are selected by random types of sampling methods. 420 go to work by car, 360 go to work by
2 answers
asked anonymously
92 views
A couple has three children. Assuming independence and that the probability of a boy is 1/2, determine the probability that at
2 answers
asked anonymously
104 views
You have seven $1 bills, three $5 bills, five $10 bills, and five $20 bills in your wallet. You select a bill at random. Without
2 answers
asked by
oh
93 views
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