In a certain region, the competition for social networking is between Network A and Network B. According to a survey, \( 13 \% \) of the region's citizens visit Network A, \( 12 \% \) visit Network B, and \( 1 \% \) visit both Network A and Network B. Complete parts a through c. b. Find the probability that a citizen from the region visits either Network A or Network B. The probability is \( \square \). (Simplify your answer.) c. Use your answer to part b to find the probability that a citizen from the region does not visit either social networking site. The probability is \( \square \).

9.1 Given: \( P(A)=0,45 ; P(B)=y \) and \( P(A \) or \( B)=0,74 \). Determine the value(s) of \( y \) : 9.1.1 If \( A \) and \( B \) are mutually exclusive events. 9.1.2 If \( A \) and \( B \) are independent events.

En una bolsa hay cuatro tarjetas, con los números \( 1,2,3 \) y 4 respectivamente. Si se sacan dos tarjetas de la bolsa, una tras otra y con reposición, ¿cuál es la probabilidad de que la suma de los números obtenidos sea 7 ? A. \( \frac{1}{4} \) B. \( \frac{7}{16} \) C. \( \frac{1}{16} \)

The probability that it will be sunny tomorrow is \( \frac{2}{9} \). If it is sunny, the probability that Siya plays rugby is \( \frac{8}{15} \). If it is not sunny, the probability that Siya plays rugby is \( \frac{4}{15} \) 9.2.1 Represent the above information on the tree diagram and indicate all the possible outcomes.

A six-sided die is rolled. Let A be the event "getting an odd prime number". (1) Write down the set \( \mathrm{A}, \mathrm{n}(\mathrm{A}) \) and \( \mathrm{P}(\mathrm{A}) \). (2) Draw a Venn diagram showing the actual outcomes. (3) Draw a Venn diagram showing the number of outcomes. (4) Draw a Venn diagram showing the probabilities.

Se tiene una urna con 7 Pelotas de color negra 8 de color blanco y a de color gris. ¿ cual es la pro bilidad de elegir al azar una pebta de color negro y una de color gris?