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Recent questions tagged sheldon-ross
9
votes
2
answers
1
A First Course In Probability, 9th Edition, Indian Version, Sheldon Ross, Chapter 3, Problems, 17.
The probability of 2 children to be twins is given as 2% and the probability of them being identical twins is 0.16%. If both genders are equally likely and identical twins always belong to the ... , then find the probability that the children are identical twins given that they are both twin boys.
The probability of 2 children to be twins is given as 2% and the probability of them being identical twins is 0.16%. If both genders are equally likely and identical twin...
Suraj Reddy
827
views
Suraj Reddy
asked
Apr 8, 2023
Probability
probability
sheldon-ross
conditional-probability
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1
votes
1
answer
2
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.
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 ...
lolalo
912
views
lolalo
asked
Sep 10, 2022
Probability
probability
sheldon-ross
conditional-probability
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0
votes
1
answer
3
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
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 someon...
lolalo
451
views
lolalo
asked
Jul 28, 2022
Probability
probability
sheldon-ross
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0
votes
1
answer
4
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?
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...
aditi19
1.1k
views
aditi19
asked
Jun 14, 2019
Probability
probability
sheldon-ross
engineering-mathematics
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0
votes
1
answer
5
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?
Compute the probability that if 10 married couples are seated at random at a round table, then no wife sits next to her husband1 wife sits next to her husband. pick one o...
aditi19
5.2k
views
aditi19
asked
Jun 11, 2019
Probability
combinatory
probability
discrete-mathematics
sheldon-ross
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2
votes
1
answer
6
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?
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 th...
Asim Siddiqui 4
1.1k
views
Asim Siddiqui 4
asked
May 28, 2019
Probability
probability
sheldon-ross
random-variable
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1
votes
1
answer
7
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?
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 exa...
Asim Siddiqui 4
736
views
Asim Siddiqui 4
asked
May 27, 2019
Probability
probability
sheldon-ross
random-variable
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2
votes
2
answers
8
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?
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 indivi...
Asim Siddiqui 4
946
views
Asim Siddiqui 4
asked
May 21, 2019
Probability
probability
random-variable
sheldon-ross
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1
votes
1
answer
9
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.
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 ther...
souren
871
views
souren
asked
May 8, 2019
Combinatory
probability
sheldon-ross
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0
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0
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10
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??
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 hous...
Doraemon
959
views
Doraemon
asked
Mar 22, 2019
Probability
probability
sheldon-ross
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0
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0
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11
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.
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). Determi...
Sandy Sharma
2.6k
views
Sandy Sharma
asked
Jan 9, 2019
Probability
probability
sheldon-ross
random-variable
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0
votes
0
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12
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?
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 compo...
Ayush Upadhyaya
1.6k
views
Ayush Upadhyaya
asked
Jul 7, 2018
Probability
probability
sheldon-ross
random-variable
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0
votes
0
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13
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.
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
658
views
Ayush Upadhyaya
asked
Jul 6, 2018
Probability
probability
sheldon-ross
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0
votes
2
answers
14
Sheldon ross -Conditional probability
Prateek Raghuvanshi
617
views
Prateek Raghuvanshi
asked
Jun 6, 2018
Mathematical Logic
sheldon-ross
probability
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3
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0
answers
15
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?
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 ...
Sagnik Chatterjee
870
views
Sagnik Chatterjee
asked
Apr 29, 2018
Probability
combinatory
sheldon-ross
probability
engineering-mathematics
+
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2
votes
2
answers
16
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.
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...
Subham Nagar
1.2k
views
Subham Nagar
asked
Apr 17, 2018
Probability
probability
sheldon-ross
+
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2
votes
1
answer
17
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?
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 th...
Mk Utkarsh
1.9k
views
Mk Utkarsh
asked
Apr 10, 2018
Probability
probability
sheldon-ross
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1
votes
2
answers
18
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?
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!
1.5k
views
Tesla!
asked
Feb 20, 2018
Combinatory
sheldon-ross
combinatory
+
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2
votes
1
answer
19
Sheldon Ross
Prove $\binom{m+n}{r}$ = $\binom{n}{0}\binom{m}{r}+\binom{n}{1}\binom{m}{r-1}+... +\binom{n}{r}\binom{m}{0}$
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!
496
views
Tesla!
asked
Feb 20, 2018
Combinatory
sheldon-ross
combinatory
+
–
0
votes
0
answers
20
Sheldon Ross
Determine the number of vectors $\{x_{1}...x_{n}\}$, such that each $x_{i}$ is either $0$ or $1$ and $\displaystyle{\sum_{i=1}^{n}x_{i}\geq k}$
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!
611
views
Tesla!
asked
Feb 19, 2018
Combinatory
sheldon-ross
combinatory
+
–
1
votes
1
answer
21
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.
In the below question my query is for (a) partWhen we are calculating $P\left \{ \frac{-1}{3}< Z< \frac{2}{3} \right \}$I know that the normal variable X is converted to ...
Ayush Upadhyaya
523
views
Ayush Upadhyaya
asked
Dec 11, 2017
Probability
probability
sheldon-ross
random-variable
+
–
0
votes
2
answers
22
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?
A plane is missing and it is presumed that it was equally likely to havegone down in any of three possible regions. Let 1 − αi denote the probability the planewill be ...
Ahwan
1.7k
views
Ahwan
asked
Dec 3, 2017
Probability
probability
discrete-mathematics
sheldon-ross
+
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