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Probability Questions & Answers

Q:
d. Choosing the letter A from the set \( \{ \) B A N A Determine the probability of the following even a. Getting tails when you toss a coin b. Throwing a six when you toss a die c. Choosing a toffee if you pick a sweet at ran toffees and nine jellies
Q:
Dada la función de probabilidad conjunta. \[ f_{x y}(x, y)=\left\{\begin{array}{l} \frac{6}{5}\left(x+y^{2}\right), 0 \leq x \leq 1,0 \leq y \leq 1 \\ 0, \quad \text { otro caso }\end{array}\right. \] Determinar \( P\left(\left.x>\frac{1}{4} \right\rvert\, y>\frac{1}{2}\right) \)
Q:
1. [2,5 ptos] Se lanzan 5 dados equilibrados y sea V:" lanzamientos", Galcula la probabilidad de obtener: a) Más de un uno b) Al menos cuatro unos c) Mas de 2 pero menos de 5 unos d) Ei nutmero medio de caras y la desviación típica
Q:
[2,5 ptos] En un centro educativo, el \( 25 \% \) de los/as alumnos/as está inscrito actividad extraescolar. Si elegimos al azar 15 alumnos/as de este centro, probabilidad de que: a. Ninguno participe en actividades extraescolares b. Entre 6 y 8 participen en actividades extraescolares c. Como mucho 4 participen en actividades extraescolares
Q:
1. En una población de cada 2 adultos mayores de 24 años solo uno tiene estudios posteriores a la ESO. Elegidas 8 personas mayores de 24 años, calcula la probabilidad de: a. Exactamente 4 tengan solo estudios de la ESO b. Al menos dos tengan estudios posteriores a la ESO
Q:
calcule: a) \( P(50 \leq x \leq 100) \)
Q:
At an airport, 25% of the flights arrive from within the state, 35% from out of state, and the rest from other countries. How many flights arrived from out of state, if a total of 240 flights arrived?A. 24 B. 36 C. 60 D. 84
Q:
В лыжных гонках участвуют 13 спортсменов из России, 2 спортсмена из Норвегии и 5 спортсменов из Швеции. Порядок, в котором спортсмены стартуют, определяется жребием. Найдите вероятность того, что первым будет стартовать спортсмен из 5 Норвегии или Швеции.
Q:
Trisha has 2 boxes of marbles. She selects a marble from each box 100 times, replacing the marble back into its box each time.From the first box, she selects:A white marble 29 timesA red marble 25 timesA blue marble 46 times.From the second box, she selects:A yellow marble 27 times.A green marble 21 timesAn orange marble 52 times.Based on this information, what is the probability that Trisha will select a red marble from the first box and an orange marble from the second box on her next turn?
Q:
Question 1 (10 points): In the game of Roulette, the probability of a given spin landing on Red is 18/38. What is the probability that over four spins of the Roulette wheel, exactly two spins land on Red? \( \quad \) * Binomial Mandom Variable : \( P(X=x)=\binom{N}{x} P^{x}(1-p)^{N-x} \)
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