Question

question 1 Consider a sample space S, and two events A and B such that P(A ∩ B) = 0.2, P(A ∪ B) = 0.6, P(B ∪ ̄A) = 0.8 (a) [0.5 points] Calculate P (A). (b) [0.5 points] Calculate P (B)

175

likes
873 views

Answer to a math question question 1 Consider a sample space S, and two events A and B such that P(A ∩ B) = 0.2, P(A ∪ B) = 0.6, P(B ∪ ̄A) = 0.8 (a) [0.5 points] Calculate P (A). (b) [0.5 points] Calculate P (B)

Expert avatar
Murray
4.5
84 Answers
Para calcular P(A), podemos utilizar la fórmula de inclusión-exclusión:

P(A) = P(A ∪ B) - P(B ∩ ̄A)

P(B ∩ ̄A) = P(B) - P(B ∩ A)

(a) Para calcular P(A):

P(A) = P(A ∪ B) - P(B ∩ ̄A)
P(A) = 0.6 - (P(B) - P(B ∩ A))

(b) Para calcular P(B):

P(B ∩ A) = P(A ∩ B) (por simetría)
P(B ∩ A) = 0.2

P(B ∪ ̄A) = P(B) + P( ̄A) - P(B ∩ ̄A)
0.8 = P(B) + (1 - P(A)) - 0.2

Simplificando la ecuación:

0.8 = P(B) + 1 - P(A) - 0.2
0.8 = P(B) - P(A) + 0.8

P(B) - P(A) = 0

P(B) = P(A)

Por lo tanto, P(B) = P(A).

Respondiendo a la pregunta (a):

P(A) = 0.6 - (P(B) - P(B ∩ A))
P(A) = 0.6 - (P(A) - 0.2)

Simplificando la ecuación:

P(A) = 0.4

Respondiendo a la pregunta (b):

P(B) = P(A)
P(B) = 0.4

Answer:
(a) P(A) = 0.4
(b) P(B) = 0.4

Frequently asked questions (FAQs)
Question: What is the maximum value (rounded to the nearest tenth) of the trigonometric function sin(x) + cos(x) in the interval [0, 2π)?
+
What is the square root of 123456789?
+
What is the derivative of y = 2x^3 - 5x^2 + 4x?
+
New questions in Mathematics
A circle with a 12-inch diameter is folded in half and then folded in half again. What is the area of the resulting shape?
3(4×-1)-2(×+3)=7(×-1)+2
2/3+5/6×1/2
Find the equation of the line perpendicular to −5𝑥−3𝑦+5=0 passing through the point (0,−2)
The average number of babies born at a hospital is 6 per hour. What is the probability that three babies are born during a particular 1 hour period?
Solve : 15/16 divide 12/8 =x/y
It is known that the content of milk that is actually in a bag distributes normally with an average of 900 grams and variance 25 square grams. Suppose that the cost in pesos of a bag of milk is given by 𝐶(𝑥) = { 3800 𝑠𝑖 𝑥 ≤ 890 4500 𝑠𝑖 𝑥 > 890 Find the expected cost.
Convert 5/9 to a decimal
Use linear approximation to estimate the value of the sine of 31o.
X³-27
Solve equations by equalization method X-8=-2y 2x+y=7
Next%C3%B3n%2C+we+are+given+a+series+of+Tri%C3%A1angles+Right%C3%A1angles+%3Cbr%2F%3Ey+in+each+one+of+them+ are+known+2%28two%29+measurements+of+sides.+%3Cbr%2F%3Elet's+determine+all+trigonom%C3%A9tric+ratios.
cube root of 56
17. A loan for $104259 is taken out for 10 years with an annual interest rate of 9.4%, compounded quarterly. What quarterly payment is required to pay the loan off in 10 years? Enter to the nearest cent (two decimals). Do not use $ signs or commas in the answer.
What is the value of f(-3) for the function X squared+5x-8=
A 20,000 kg school bus is moving at 30 km per hour on a straight road. At that moment, it applies the brakes until it comes to a complete stop after 15 seconds. Calculate the acceleration and the force acting on the body.
00 piece jigsaw puzzle. the completed puzzle is 10x10. each piech connects to at least 2 other pieces. i plan to assemble by taking pieces out of box one by one. if i've already taken out 2 pieces that dont directly connect, what is the minimum number of additional pieces that i need to draw to in order to guarentee that the original 2 pieces connect?
A 20-year old hopes to retire by age 65. To help with future expenses, they invest $6 500 today at an interest rate of 6.4% compounded annually. At age 65, what is the difference between the exact accumulated value and the approximate accumulated value (using the Rule of 72)?
simplify w+[6+(-5)]
Question 3 A square has a perimeter given by the algebraic expression 24x – 16. Write the algebraic expression that represents one of its sides.