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Probability Theory
Page 5
Questions (276)
According to the Smart magazine, 70% of smokers started smoking before the age of 18. Suppose 10 smokers are randomly selected
1 answer
asked by
jerry
1,065 views
define steady state in markov chains mathmatically
1 answer
asked anonymously
32 views
Jo flips a coin {H,T}; then rolls a 6-sided die {1, 2, 3, 4, 5, 6}.
Which of the following outcomes are in the sample space of
1 answer
asked anonymously
63 views
A professional gambler claims that he has loaded a die so that the outcomes of 1,2,3,4,5,6 have corrresponding probabilities of
3 answers
asked by
Jessica
980 views
The probabilities of a student getting grade A, B, C and D are 0.2, 0.3, 0.15 and 0.35 respectively. Then the probability that
3 answers
asked by
Sharon
968 views
6. six men and four women are standing around a table that has four chairs. if four people are selected randomly to sit at the
2 answers
asked by
jamar
928 views
A telephone company's goal is to have no more than 4 monthly line failures on any 100 miles of line. The company currently
2 answers
asked by
k
916 views
Euchre uses only 9’s, 10’s, Jacks, Queens, KIngs and aces. What is the probability that a 5 card hand will have either both
4 answers
asked by
Ryan
920 views
Suppose 10% of the flights arriving at an airport arrive early, 60% arrive on time, and 30% arrive late. Valerie used the
2 answers
asked by
Polly
884 views
Let X1,X2,… be a sequence of independent random variables, uniformly distributed on [0,1] . Define Nn to be the smallest k
2 answers
asked by
mr
882 views
Approximate the probability that the sum of the 16 independent uniform (0,1) random variables exceeds 10.
3 answers
asked by
Chit
809 views
Three cards are selected, one at a time from a standard deck of 52 cards. Let x represent the number of tens drawn in a set of 3
2 answers
asked by
Jennifer
519 views
11. All probabilities can be expressed as decimal values ranging from 0 to 1.00.
1 answer
asked by
Anonymous
764 views
At a cafeteria the customers arrive at an average of 0.3 per minute. The probability that a)exactly 2 customers arrive in a 10
1 answer
asked by
momina
758 views
are there any limitations in markov chains?
1 answer
asked anonymously
25 views
is steady state in markov chains the average probabilities?
1 answer
asked anonymously
35 views
5. What is the probability of not selecting a Heart if one card is drawn from a standard 52 card deck?
3 answers
asked by
KeKe
744 views
There are three choices of fruit are bananas, pears, and oranges. If the probability of getting a banana is 5/12 and the
1 answer
asked anonymously
66 views
susan has red, blue, green, and yellow sweaters, joanne has green, red, purple, and white sweaters, diane's sweaters are red,
2 answers
asked by
lisa
718 views
a game of chance involves spinning a wheel that has 4 equally likely areas to land on areas colored red, blue, green, and white.
1 answer
asked by
jim
693 views
A certain player makes a successful first serve 80% of the time. Assume that everything is independent. The propbability that
2 answers
asked by
Emily
694 views
In a certain college, 55% of the students are women. Suppose, we take a sample of two students. Use a probability tree to find
1 answer
asked by
Sam
704 views
Suppose in a carnival game, there are six identical boxes, one of which contains a prize. A contestant wins the prize by
2 answers
asked by
Jacob
697 views
Event A occurs with probability 0.1 and event B with probability 0.5
A) What is the maximum probability that the intersection of
1 answer
asked by
Rebekah
672 views
A brand has 50% recognition rate. Assume the owner of the brand wants to verify that rate by beginning with a small sample of 6
1 answer
asked by
slomomo
652 views
Alberto figures that the probability of his hockey team winning on saturday is 65%. Alvin figures that the probability of his
3 answers
asked by
Mik
627 views
A box contain 12 cell phones of which 4 are defective.all phones look alike.3 phones are drawn randomly what is the
2 answers
asked by
gift onos
608 views
automoniles arrive at the drive-through windom at a post office at the rate of 4 every 10 minutes. the average service time is 2
1 answer
asked by
mark
610 views
Alec is taking a Statistics class and a Geography class. The probabilities that he passes these two classes are independent. The
2 answers
asked by
Anonymous
618 views
Suppose X is a random variable whose CDF is given by
F(x) = 0, X<0 X^3, 0<X<1; 1, 1<X Then the mean for this random variable is:
2 answers
asked by
kkjhjkh
595 views
Two groups of climbers (team A and Team B) attempt to climb Mount everest using different routes. The probability of Team A
2 answers
asked by
Mark
569 views
If the mean rate of arrival in a restaurant is 10 customers per hour, what is the probability of having 4 customers arriving in
3 answers
asked by
Pavlos Cs
544 views
Approximate the probability that the sum of the 16 independent uniform (0,1) random variables exceeds 10.
2 answers
asked by
Nithi
520 views
A card is pulled from a well shuffled deck of standard playing cards and then put back in the deck. A second draw is made from
3 answers
asked by
elizabeth
528 views
for n repeated independent trials, with constant probability of success p for all trials, find the probability of exactly x
2 answers
asked by
Andrew
526 views
A test has 40 questions with 5 answer options each. If you guess at all 49 questions the mean and standard deviation of the
1 answer
asked anonymously
27 views
It is equally probable that stock A will have a +10% or -10% rate of return The only other possibility is that it will return
1 answer
asked by
Anonymous
514 views
Hi
* Suppose X has the pdf f(x)=(1/2)e^-|x| if -∞<x<∞ a)find the pdf of Y=|X|^3 b) Let W=0 if x<=0 and W=1 if x>1. Find cdf
1 answer
asked by
Melike
491 views
A signal is transmitted over a noisy channel. It is known that the signal will be correctly received with probability 0.797. If
2 answers
asked by
Janea
520 views
In a clinical trial, a drug used to reduce blood pressure caused side effects in 6% of the patients who took it. For a new rial,
2 answers
asked by
karen
504 views
Suppose you have a coin that lands on Heads with probability 0.6
There are three coin flips defined as X. Heads count 1 and tails
1 answer
asked by
Marc
507 views
the probability that a key component of a stand -by generator will fail during a power outage is q. A generator works if at
2 answers
asked by
TODOKO
502 views
The game of dots is played by rolling a fair die and
receiving $1 for each dot showing on the top face of the die. What cost
2 answers
asked by
Anonymous
482 views
Will the sampling distribution of means be approximately normal if n=25 or so, even if the frequency distribution of X values is
1 answer
asked by
Carol
485 views
a coin is loaded so that the probability of getting tails is 1/4. If the coin is flipped twice, what is the probability of
1 answer
asked by
TIERNEY
452 views
a rifleman averages 8 hits out of 10 shots at a tare what is the probability that he will hit the target 3 out of 4 shots
1 answer
asked by
Patty
457 views
A company manufactures caclculators in batchers of 64 and there is a 5% rate of defects. Find the probability of getting exactly
3 answers
asked by
autumn
469 views
Suppose an urn contains 10 balls numbered from 1 to 10. Someone draws 3 balls simultaneously from the urn (i.e. without
1 answer
asked by
Olivia
451 views
In a hospital 6 deliveries have been occurred. The probability that the baby is female equal 0.48
a. Find the probability
1 answer
asked by
Nada
441 views
What is the probability that the value of a randomly selected variable from a normal distribution will be more than 3 standard
1 answer
asked by
MrsAwhite
438 views
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