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Recent questions tagged sheldon-ross
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A First Course In Probability, 9th Edition, Indian Version, Sheldon Ross, Chapter 3, Problems, 33.
The meteorology department predicts the rain correctly with a probability of 4/5. When rain is predicted Amit travels by his car. When rain is not forecasted, he travels with his car with a probability of ... a probability of 1/2. Find the probability that Amit does not travel by car given it rains.
jomboy
asked
in
Probability
Sep 10
by
jomboy
198
views
probability
sheldon-ross
conditional-probability
0
votes
1
answer
2
A First Course In Probability, 9th Edition, Indian Version, Sheldon Ross, Chapter 2, Problems, 18.
A deck consists of 52 playing cards which is well shuffled. Draw 6 cards. Find the probability that among the cards there will be a representative of all suits? can someone get to this answer –-→ 6283420/20358520
jomboy
asked
in
Probability
Jul 28
by
jomboy
153
views
probability
sheldon-ross
0
votes
1
answer
3
Sheldon Ross Chapter-2 Question-15b
If it is assumed that all $\binom{52}{5}$ poker hands are equally likely, what is the probability of being dealt two pairs? (This occurs when the cards have denominations a, a, b, b, c, where a, b, and c are all distinct.) my approach is: selecting a ... I'm getting answer 0.095 but in the book answer is given 0.0475 where am I going wrong?
aditi19
asked
in
Probability
Jun 14, 2019
by
aditi19
710
views
probability
sheldon-ross
engineering-mathematics
0
votes
1
answer
4
Sheldon Ross Example-5n
Compute the probability that if 10 married couples are seated at random at a round table, then no wife sits next to her husband 1 wife sits next to her husband. pick one of the 10 couples=$\binom{10}{1}$. These couples can interchange their position such that ... sits together=$\frac{N}{19!}$ so probability that no couple sits together=$1-\frac{N}{19!}$ is this correct?
aditi19
asked
in
Probability
Jun 11, 2019
by
aditi19
3.1k
views
combinatory
probability
discrete-mathematics
sheldon-ross
1
vote
1
answer
5
Sheldon Ross, Chapter# 4 RANDOM VARIABLES, Q.51 (9th edition page#167)
If a student copies his assignments from his friend he would get 80 marks. If he had done the assignments independently he would have scored 50 marks out of 100 and if the teacher finds he is cheating he ... , what is the probability that he will lose more marks with copying than by doing his independent work independently?
Asim Siddiqui 4
asked
in
Probability
May 28, 2019
by
Asim Siddiqui 4
645
views
probability
sheldon-ross
random-variable
1
vote
1
answer
6
A FIRST COURSE IN PROBABILITY (SHELDON ROSS),CHAPTER 4 RANDOM VARIABLES, QUESTION#43
A carnival swing ride swings to the left with probability 0.4 and to the right with probability. If the ride stops after 10 swings, what is the probability that it is exactly at the place it started?
Asim Siddiqui 4
asked
in
Probability
May 27, 2019
by
Asim Siddiqui 4
540
views
probability
sheldon-ross
random-variable
2
votes
2
answers
7
Sheldon Ross, Chapter #4, Question #13
An airline operates a flight having 50 seats. As they expect some passenger to not show up, they overbook the flight by selling 51 tickets. The probability that an individual passenger will not show up is 0.01, independent of all other ... the airline has to pay a compensation of Rs.1lakh to that passenger. What is the expected revenue of the airline?
Asim Siddiqui 4
asked
in
Probability
May 21, 2019
by
Asim Siddiqui 4
539
views
probability
random-variable
sheldon-ross
1
vote
1
answer
8
A first course in probability by Sheldon Ross
What are the relevant chapter of probability by sheldon ross to study for gate? I think whole syllabus is within chapter 5,Should i study everything upto chapter 5 or there are some topics that can be skipped.
souren
asked
in
Combinatory
May 8, 2019
by
souren
595
views
probability
sheldon-ross
0
votes
0
answers
9
SHELDON AND ROSS
Twelve percent of all US households are in California. A total of 3.3 percent of all US households earn over 250000 per year, while a total of 6.3 percent California households earn over 250000 per year. If a randomly chosen US household earns over 250,000 per year, ... 10^(-3)/(0.033)=0.2291 But the answer given in the instructors manual is .2066 What is wrong with my logic??
Doraemon
asked
in
Probability
Mar 22, 2019
by
Doraemon
633
views
probability
sheldon-ross
0
votes
0
answers
10
Expected length Sheldon Ross
This is an example in the book (A First Course in Probability by Sheldon Ross). A stick of length 1 is split at a point U that is uniformly distributed over (0,1). Determine the expected length of the piece that contains the point 0≤p≤1. So, My doubt ... according to proposition g(x) is Lp(U) , what is f(x) why f(x) is not multiplied. in calculating expected value.
Sandy Sharma
asked
in
Probability
Jan 9, 2019
by
Sandy Sharma
1.5k
views
probability
sheldon-ross
random-variable
0
votes
0
answers
11
Probability-Sheldon Ross(Self Doubt)
I was reading probability from Sheldon Ross and found below example. A purchaser of electrical components buys them in lots of size 10. It is his policy to inspect 3 components from a lot and to accept the lot if all the 3 are nondefective. If 30 percent of ... why they have multiplied it with $\frac{3}{10}$ in the first part and $\frac{7}{10}$ in the second?
Ayush Upadhyaya
asked
in
Probability
Jul 7, 2018
by
Ayush Upadhyaya
1.2k
views
probability
sheldon-ross
random-variable
0
votes
0
answers
12
Probability-Sheldon Ross
An ordinary deck of 52 playing cards is randomly divided into 4 piles of 13 cards each. Compute the probability that each pile has exactly 1 ace.
Ayush Upadhyaya
asked
in
Probability
Jul 6, 2018
by
Ayush Upadhyaya
363
views
probability
sheldon-ross
0
votes
2
answers
13
Sheldon ross -Conditional probability
Prateek Raghuvanshi
asked
in
Mathematical Logic
Jun 6, 2018
by
Prateek Raghuvanshi
364
views
sheldon-ross
probability
3
votes
0
answers
14
A First Course in Probability 8th Edition: Axioms of Probability Example 5k
The question in the book is as follows: A football team consist s of 20 offensive and 20 defensive players. The players are to be paired in groups of 2 for the purpose of determining roommates. If the pairing is done at random, ... 2,2,...,2$\times 10!$ My questions is: Why is choosing ordered pairs a mistake in this case?
Sagnik Chatterjee
asked
in
Probability
Apr 29, 2018
by
Sagnik Chatterjee
624
views
combinatory
sheldon-ross
probability
engineering-mathematics
2
votes
2
answers
15
Sheldon Ross- A first course in Probability
An urn contains 6 white and 9 black balls. If 4 balls are to be randomly selected without replacement, what is the probability that the first 2 selected are white and the last 2 black. I solved it in this manner : (6C2 * 9C2)/ (15C4) --- getting 36 ... (6*5*9*8)/(15*14*13*12) --- 6/91 I cannot understand exactly why my approach is not working over here.
Subham Nagar
asked
in
Probability
Apr 17, 2018
by
Subham Nagar
536
views
probability
sheldon-ross
2
votes
1
answer
16
Sheldon Ross 3.13
Balls are randomly removed from an urn that initially contains 20 red and 10 blue balls. (a) What is the probability that all of the red balls are removed before all of the blue ones have been removed? Now suppose that the urn initially contains 20 red, 10 blue ... red, green? (d) What is the probability that the group of blue balls is the first of the three groups to be removed?
Mk Utkarsh
asked
in
Probability
Apr 10, 2018
by
Mk Utkarsh
1.2k
views
probability
sheldon-ross
1
vote
2
answers
17
Sheldon Ross
From 10 married couples, we want to select group of 6 that is not allowed to contain a married couple. How many choices are there?
Tesla!
asked
in
Combinatory
Feb 20, 2018
by
Tesla!
1.0k
views
sheldon-ross
combinatory
2
votes
1
answer
18
Sheldon Ross
Prove $\binom{m+n}{r}$ = $\binom{n}{0}\binom{m}{r}+\binom{n}{1}\binom{m}{r-1}+... +\binom{n}{r}\binom{m}{0}$
Tesla!
asked
in
Combinatory
Feb 20, 2018
by
Tesla!
323
views
sheldon-ross
combinatory
0
votes
0
answers
19
Sheldon Ross
Determine the number of vectors $\{x_{1}...x_{n}\}$, such that each $x_{i}$ is either $0$ or $1$ and $\displaystyle{\sum_{i=1}^{n}x_{i}\geq k}$
Tesla!
asked
in
Combinatory
Feb 19, 2018
by
Tesla!
317
views
sheldon-ross
combinatory
1
vote
1
answer
20
Sheldon Ross Normal Variable
In the below question my query is for (a) part When we are calculating $P\left \{ \frac{-1}{3}< Z< \frac{2}{3} \right \}$ I know that the normal variable X is converted to standard normal variable and then we look for values in normal table but I want to know how the third step came? Please explain anyone.
Ayush Upadhyaya
asked
in
Probability
Dec 11, 2017
by
Ayush Upadhyaya
406
views
probability
sheldon-ross
random-variable
0
votes
2
answers
21
Sheldon Ross Example 3.7f
A plane is missing and it is presumed that it was equally likely to have gone down in any of three possible regions. Let 1 − αi denote the probability the plane will be found upon a search of the ith region when the plane is, in fact, in that ... conditional probability that the plane is in the ith region, given that a search of region 1 is unsuccessful, i = 1, 2, 3?
Ahwan
asked
in
Probability
Dec 4, 2017
by
Ahwan
733
views
probability
discrete-mathematics
sheldon-ross
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