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Probability and Statistics
Page 9
Questions (4,622)
A combination lock has 10 dials. To
open the lock, you must turn the dial right to the first number, left to the second number.
1 answer
asked by
Nina PLEASE
440 views
A loaded die has the property that the probability of throwing an odd number is three time the probability of throwing an even
2 answers
asked by
A loaded die
514 views
The newest invention is a three-sided die. On any roll of this die, the result is 1 with probability 1/2, 2 with probability
4 answers
asked by
qwerty
4,009 views
Could someone please check this and let me know if I'm doing it correctly?
Sammy and Sally each carry a bag containing banana,
2 answers
asked by
Mary
632 views
a box contains 25 computer diskettes, 5 of which are double density and the remiander are high density. A second box contains 15
3 answers
asked by
Josh_DB9
423 views
The producer of HB pencils has 720 pencils randomly chosen from each day's productions. A defect rate of 15% is acceptable.
a)
1 answer
asked by
Jamey
457 views
find the normal approximation for the binomial probability that x=5,where n=12, and p=0.7compare probability to table b of
2 answers
asked by
vedry frustrated please help and show work
957 views
A company installs 5000 light bulbs, each with an average life of 500 hours, standard deviation of 100 hours, and
distribution
3 answers
asked by
Anonymous
1,925 views
Customers arrive at Paul Harrold¡¯s styling shop at a rate of 3 per hour, distributed in a Poisson fashion. Paul a perform
1 answer
asked by
jkjk
817 views
Suppose 10% of the flights arriving at an airport arrive early, 60% arrive on time, and 30% arrive late. Valerie used the
4 answers
asked by
Anonymous
1,333 views
A team averages 7 losses for every 13 games it wins.
If ties are not permitted, what is the probability that the team will win
5 answers
asked by
Isabel
979 views
The probability that a person catches a cold during the cold and flu season is 0.62. Assume that 5 people are chosen at random.
A
2 answers
asked by
agak
961 views
A company has 2 machines. On any day, each machine that is working has a 1/3 chance of breaking down. If a machine breaks down
3 answers
asked by
Denise
1,875 views
Suppose we have an urn with 10 white balls and 6 red balls, and we create an experiment by randomly selecting 6 balls from the
3 answers
asked by
Em
712 views
The marketing director of a department store interviewed 50 customers who had bought appliances the previous week. They found
3 answers
asked by
Sharon
761 views
A factory produces a particular type of electronic component. The probability of a component being acceptable is 0.95. The
4 answers
asked by
Koylar
892 views
Box A contains 3 white marbles and 4 black marbles. Box B contains 6 white marbles and 5 black marbles. An experiment consists
3 answers
asked by
Katie
3,014 views
A box contains 10 transistors,4 of which are defective. If 4 are selected at random, find the probability that
a. All are
4 answers
asked by
Beth
3,814 views
1. You mix the letters: S E M I T R O P I C A and L thoroughly. Without looking you draw one letter. Find the probability that
5 answers
asked by
Cj So Cool
2,682 views
A certain system can experience three different types of defects. Let Ai (i = 1,2,3) denote the event that the system has a
2 answers
asked by
Patrick
1,038 views
A disease affects 9% of individuals in a population and a sample of 100 people is selected from the population. What is the
1 answer
asked by
Lindz
397 views
The next generation of miniaturized wireless capsules with active locomotion will require
two miniature electric motors to
3 answers
asked by
Jafer
2,359 views
5.70 The probability is 1 in 4,000,000 that a single auto trip in the United States will result in a fatality. Over a lifetime,
1 answer
asked by
Anonymous
520 views
A total of 16 mice are sent down a maze, one by one. From previous experience, it is
believed that the probability a mouse turns
1 answer
asked by
andy
420 views
According to Masterfoods, the company that manufactures M&M’s,
12% are brown, 15% are yellow, 12% are red, 23% are blue, 23%
4 answers
asked by
ess
3,717 views
A six-sided die is rolled six times. What is the probability that the die will show an even number exactly two times?
4 answers
asked by
Mei
1,485 views
Let U, V, and W be independent standard normal random variables (that is, independent normal random variables, each with mean 0
1 answer
asked by
qwerty
1,007 views
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
1,242 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
1,517 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
1,307 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
629 views
You have been hired as the quality control office of a pharmaceutical company that manufactures aspirin tablets. According to
7 answers
asked anonymously
100 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
1,927 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
125 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
3,835 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
956 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
89 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
165 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
161 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
132 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
108 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
94 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
227 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
199 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
126 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
120 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
121 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
128 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
106 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
97 views
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