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Probability and Statistics
Page 8
Questions (4,630)
Mr. Challenger randomly selected two apples without replacing the first apple from a crate containing 10 green apples, 14 red
3 answers
asked by
Denise
641 views
1) Let X and Y be independent continuous random variables that are uniformly distributed on (0,1) . Let H=(X+2)Y . Find the
3 answers
asked by
anonymous1
1,472 views
Let 𝑋 and 𝑌 be independent continuous random variables that are uniformly distributed on (0,1) . Let 𝐻=(𝑋+2)𝑌 .
7 answers
asked by
yyyyz
3,102 views
1 Which of the following sample spaces correctly lists all the possible outcomes for flipping a coin and spinning a four-colored
26 answers
asked by
Madison
4,996 views
Let Sn be the number of successes in n independent Bernoulli trials, where the probability of success for each trial is 1/2.
5 answers
asked by
juanpro
7,113 views
Let X be a random variable that takes non-zero values in [1,∞), with a PDF of the form
fX(x)=⎧⎩⎨cx3 if x≥1,
5 answers
asked by
A
1,184 views
Let X be a standard normal random variable. Let Y be a continuous random variable such that
fY|X(y|x)=1/√2π*exp(−(y+2x)^2/2)
6 answers
asked by
TBONE
1,365 views
An assembly consists of three mechanical components. Suppose that the probabilities that the first, second, and third components
4 answers
asked by
Maureen
6,482 views
In a certain Algebra 2 class of 26 students, 21 of them play basketball and 7 of them play baseball. There are 2 students who
5 answers
asked by
Maddux
3,932 views
You observe k i.i.d. copies of the discrete uniform random variable Xi , which takes values 1 through n with equal probability.
D
10 answers
asked by
Lex
7,774 views
A school is holding a fundraising raffle. The first prize is $500, the five second prizes are $100 each, and the ten third
4 answers
asked by
Winny
2,124 views
Using the ELT16 life table, calculate the deferred probability of death for a newborn 190 for each value of n. Given this
3 answers
asked by
Kailash
217 views
Imagine that you have a coin and you are flipping it 10 times. After the 5th toss the coin has come up heads 5 times in a row.
2 answers
asked by
Hanif
615 views
A certain disease has an incidence rate of 0.7%. If the false negative rate is 7% and the false positive rate is 1%, compute the
5 answers
asked by
john
1,103 views
For this section, use the following distributions: 1) A direwolf has a 70% probability of killing a stag upon encounter; 2) a
2 answers
asked by
Kathleen
496 views
A multiple choice test has 16 questions. Each question has 4 possible answers with
only one is correct. Assume that all questions
4 answers
asked by
hassan
1,350 views
The life of automobile voltage regulators has an exponential distribution with a mean life of six years. You purchase an
4 answers
asked by
ash
2,124 views
At the first tri-city meeting, there are 8 people from town A, 7 people from town B, and 5 people from town C. If a council
4 answers
asked by
Janet
2,808 views
The random variable X has a PDF of the form
fX(x)={1x2,0,for x≥1,otherwise. Let Y=X2 . For y≥1 , the PDF of Y it takes the
4 answers
asked by
Anon
1,980 views
Consider the same model of two rolls of a tetrahedral die, with all 16 outcomes equally likely. Find the probability of the
7 answers
asked by
two time
2,624 views
Assume that the salaries of elementary school teachers in the U.S. are normally distributed with a mean of $37,000 and standard
3 answers
asked by
Anonymous
1,618 views
Let X and Y equal the outcomes when two fair six-sided dice are rolled. Let
W = X + Y. Assuming independence, find the p.m.f. of
2 answers
asked by
Sandy
873 views
An urn contains 5 red balls and 10 white balls. 6 balls are randomly drawn and not replaced. What is the probability that 3 or
3 answers
asked by
Gina
667 views
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
446 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
515 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
4,013 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
637 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
424 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
461 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
962 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
1,929 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
819 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
1,337 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
983 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
965 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
1,879 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
719 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
764 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
894 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
3,017 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
3,817 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
2,685 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
1,043 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
400 views
The next generation of miniaturized wireless capsules with active locomotion will require
two miniature electric motors to
3 answers
asked by
Jafer
2,362 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
523 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
424 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
3,719 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
1,492 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
1,010 views
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