You have two fair, 6-sided dice. Die 1 has 4 white faces and 2 black faces. Die 2 has 2 white faces and 4 black faces. You roll Die 1. If it comes up white, then Die 1 is the “chosen die” and you put Die 2 away, but if it comes up black, then Die 2 is the “chosen die” and you put Die 1 away. You now roll the chosen die twice, noting the color that comes up in each of these rolls.
Let W1 be the event that the first of these 2 rolls of the chosen die comes up white, and let W2 be the event that the second of these 2 rolls of the chosen die comes up white. Give exact answers as simplified fractions and provide a brief 1-2 sentence explaining your reasoning.
(a) Calculate P(W1) and P(W2).
(b) Calculate P(W2 | W1) (Hint: you cannot assume without proof that W1 and W2 are independent.)
(c) Are W1 and W2 independent? Justify your answer.
(d) If the 2 rolls of the chosen die both come up white, what is the probability that Die 1 is being used?
You have two fair, 6-sided dice. Die 1 has 4 white faces and 2 black faces....
7. Pairwise Independence. Roll a red 4-sided die and a white 4-sided die. A: the red die is even B: the white die is even C: the sum of the two dice is even a) Show that A, B, and C are pairwise independent. b) Show that A n B and C are NOT independent. 8. Roll a red 6-sided die and a white 6-sided die. D: red die is 1 or 2 or 3 Show that P(D กั E...
You have two fair six-sided dice and you roll each die once. You count the sum of the numbers facing up on each die. Let event A be "the sum is not a prime number." What is P(A) 06/12 06/11 05/11 05/12
3-(35 points) Two standard 6-sided dice with 6 faces having values (1,2,3,4,5,6) are thrown and the face values on the top face of cach die are observed. Let E be the event that the maximum of the dice face values is odd Let F be the event that none of the dice lands on the value 1. Let G be the event that the product is less or equal to 6. a) Determine the probabilities of all events: E, F,...
1. Suppose Jane has a fair 4-sided die, and Dick has a fair 6-sided die. Each day,they roll their dice (independently) until someone rolls a “1”. (Then the personwho did not roll a “1” does the dishes.) Find the probability that …a) they roll the first “1” at the same time (after equal number of attempts);b) it takes Dick twice as many attempts as it does Jane to roll the first “1”;c) Dick rolls the first “1” before Jane does.
You roll a pair of fair 6-sided dice: a red die and a blue die. (a) Consider event A: {the outcome of the red die is more than 3} and event B: {the outcome of the red die is less than 5}. Given that event A occurs, what is the probability that event B occurs? (b) Are A and B mutually exclusive (i.e., disjoint)? (c) Are A and B independent? (d) Calculate the probability of event C: {the outcome of...
You roll a pair of fair 6-sided dice: a red die and a blue die. (a) Consider event A: {the outcome of the red die is more than 3} and event B: {the outcome of the red die is less than 5}. Given that event A occurs, what is the probability that event B occurs? (b) Are A and B mutually exclusive (i.e., disjoint)? (c) Are A and B independent? (d) Calculate the probability of event C: {the outcome of...
Suppose you roll two 4 sided dice. Let the probabilities of the first die be represented by random variable X and those of the second die be represented by random variable Y. Let random variable Z be |X-Y|. The range of Z will be from 0 to 3. 1. Find E(Z). 2. Find P(Z = 1|Z <3). 3. What is the probability that you have to play the game 4 times before you roll Z=3? 4. What is the probability...
dice is unbiased. Throws independent. Step 1. You roll a six-sided die. Let X be the (random) number that you obtain. Step 2. You roll X six-sided dice. Let Y be the total number (sum) that you obtain from these X dice. Find E[Y] rounded to nearest .xx.
Suppose you roll two 4 sided dice. Let the probabilities of the first die be represented by random variable X and those of the second die be represented by random variable Y. Let random variable Z be (X+Y). The range of Z will be from 2-8. 1.(2.5 points) Find E(Z). 2. (2.5 points) Find P(Z = 71Z > 5). 3.(2.5 points) What is the probability that you have to play the game 4 times before you roll Z=7? 4. (2.5...
Suppose you roll two 4 sided dice. Let the probabilities of the first die be represented by random variable X and those of the second die be represented by random variable Y. Let random variable Z be (X+Y). The range of Z will be from 2-8. 1.(2.5 points) Find E(Z). 2. (2.5 points) Find P(Z = 71Z > 5). 3.(2.5 points) What is the probability that you have to play the game 4 times before you roll Z=7? 4. (2.5...