Question

Probability problem: let u1 and u2 be two urns each containing 6 balls identical to the hit such that u1 contain 2 red balls, 3 green, and one black; and u2 2 red balls, one green and 3 black. we draw at random and simultaneously 2 balls from u1 and put them in u2, then we draw two balls at random and simultaneously from u2 which we place in u1. what is the probability that the contents of each ballot box will remain unchanged after that? And what is the probability that the contents of the ballot boxes will be interchanged?

179

likes
896 views

Answer to a math question Probability problem: let u1 and u2 be two urns each containing 6 balls identical to the hit such that u1 contain 2 red balls, 3 green, and one black; and u2 2 red balls, one green and 3 black. we draw at random and simultaneously 2 balls from u1 and put them in u2, then we draw two balls at random and simultaneously from u2 which we place in u1. what is the probability that the contents of each ballot box will remain unchanged after that? And what is the probability that the contents of the ballot boxes will be interchanged?

Expert avatar
Rasheed
4.7
110 Answers
Pour résoudre ce problème, nous allons utiliser les règles de la probabilité.

Premièrement, déterminons la probabilité que le contenu de chaque urne reste inchangé.

Étape 1: Calcul de la probabilité que les boules tirées de u1 restent dans u1.

La probabilité de tirer une boule rouge de u1 est \frac{2}{6} .

Après avoir tiré une boule rouge de u1, il reste 5 boules dans u1 et 3 boules rouges dans u2.

La probabilité de tirer une deuxième boule rouge de u1 est donc \frac{3}{5} .

La probabilité que les deux boules tirées de u1 restent dans u1 est alors \frac{2}{6} \times \frac{3}{5} = \frac{6}{30} .

Étape 2: Calcul de la probabilité que les boules tirées de u2 restent dans u2.

La probabilité de tirer une boule rouge de u2 est \frac{2}{6} .

Après avoir tiré une boule rouge de u2, il reste 4 boules dans u2 et 2 boules rouges dans u1.

La probabilité de tirer une deuxième boule rouge de u2 est donc \frac{2}{4} .

La probabilité que les deux boules tirées de u2 restent dans u2 est alors \frac{2}{6} \times \frac{2}{4} = \frac{4}{24} .

Étape 3: Calcul de la probabilité globale que le contenu de chaque urne reste inchangé.

Les deux tirages sont indépendants, donc nous multiplions les deux probabilités précédentes pour obtenir la probabilité globale :

\frac{6}{30} \times \frac{4}{24} = \frac{1}{20} .

Donc, la probabilité que le contenu de chaque urne reste inchangé est de \frac{1}{20} .

Maintenant, calculons la probabilité que le contenu des urnes soit interchangé.

La probabilité que le contenu des urnes soit interchangé est complémentaire à la probabilité que le contenu de chaque urne reste inchangé. Donc,

Probabilité du contenu des urnes interchangé = 1 - Probabilité que le contenu de chaque urne reste inchangé.

Probabilité du contenu des urnes interchangé = 1 - \frac{1}{20} = \frac{19}{20} .

Réponse :

La probabilité que le contenu de chaque urne reste inchangé est de \frac{1}{20} .

La probabilité que le contenu des urnes soit interchangé est de \frac{19}{20} .

Frequently asked questions (FAQs)
Math question: Find the absolute extrema of the function f(x) = x^2 - 4x + 3 on the closed interval [1, 5].
+
Math Question: What is the 4th-order derivative of f(x) = 3x^5 - 2x^3 + 6x - 9?
+
Question: What is the derivative of f(x) = 3x^2 - 5x + 2 using the basic rules of derivatives?
+
New questions in Mathematics
A=m/2-t isolate t
a to the power of 2 minus 16 over a plus 4, what is the result?
Convert the following function from standard form to vertex form f(x) = x^2 + 7x - 1
Y=-x^2-8x-15 X=-7
A normally distributed population has a mean of 118 with a standard deviation of 18. What score separates the lowest 72% of the distribution from the rest of the scores?
90 divided by 40
5 people can complete a task in 72 hours. How many people are needed to complete the task in 60 hours.
The ratio of tomatoes to red apples is 2:5. If there are 20 tomaoes in the garden, how many red apples are there?
1 plus 1
3(2•1+3)4
If you randomly selected one person from the 900 subjects in this study, what is the probability that the person exhibits the minimum BMI?
Suppose the Golf ball market is perfectly competitive and the functions are known: Q = 120 – 2Px – 2Py 0.2I Q = 2Px 40 Where I = Consumers' income ($200) and Py = Price of Good Y (40) Calculate the equilibrium elasticity: a) 1.6 b) -6 c) 6 d) 0.6
What’s the slope of a tangent line at x=1 for f(x)=x2. We can find the slopes of a sequence of secant lines that get closer and closer to the tangent line. What we are working towards is the process of finding a “limit” which is a foundational topic of calculus.
The market for economics textbooks is represented by the following supply and demand equations: P = 5 + 2Qs P = 20 - Qd Where P is the price in £s and Qs and Qd are the quantities supplied and demanded in thousands. What is the equilibrium price?
Use the sample data and confidence level given below to complete parts​ (a) through​ (d). A drug is used to help prevent blood clots in certain patients. In clinical​ trials, among 4336 patients treated with the​ drug, 194 developed the adverse reaction of nausea. Construct a ​99% confidence interval for the proportion of adverse reactions.
What is the value of f(-3) for the function X squared+5x-8=
did an analysis of dropout from the nursing faculty at the Universidad Veracruzana. With a poblation of 122 students, it turned out that according to the gender data, the female sex predominates with 82%, and the male sex male is found with 12%. The main factors why students drop out are, first of all, "Not "re-enrolled" at 49%, second place "Personal reasons" at 20%, third place "change of school" in 11%, "lack of documents" and "economic reasons" in 7%, change of residence and lack of social service in 3%. Of this sample, how many students dropped out for other reasons?
15=5(x+3)
Let f(x)=-1/2x+5 evaluate f(-6)
f(r) = 1/r+9 find f(x^2) + 1