A tetrahedron (four-sided die) is rolled twice and the sum X of k is the results...
Problem 2. A tetrahedron four-sided die) is rolled turice and the sum X of the results of the two rolls is recorded. We know that the chance that X-k is proportional to k. (a) What is the probability model for X, i.e., what values can X take, and what are the corresponding probabilities? (b) Compute the chance that the sum of the two rolls wieceed but will not be more than 6. (c) Compute the expected value of X
A fair four-sided die is rolled twice. Consider the following events: Sx = Sum of the numbers on the two rolls is equal to x (x = 2,3,...,8). Fy = The numbers on the first roll is equal to y (y = 1,2,3,4). (a) P(F4) (b) P(S8) (c) P(S8 \ F4) (d) P(S8 \ F4)
A fair tetrahedron (four-sided die) is rolled twice. Let X be the random variable denoting the total number of dots in the outcomes, and Y be the random variable denoting the maximum in the two outcomes. Thus if the outcome is a (2, 3) then X = 5 while Y = 3. (a) What are the ranges of X and Y ? (b) Find the probability mass function (PMF) of X and present it graphically. Describe the shape of this...
(MA-262 review) A fair six-sided die is rolled four times, and each result is recorded, in order. Determine (a) the probability that there are exactly two results (among the four) that are each a 3, and (b) the probability that the sum of the four results is 23. [Answers: 0.11574, 0.0030864.]
1. Consider a fair four-sided die, with sides 1, 2, 3, and 4, that is rolled twice. For example, "1,4" would indicate 1 was rolled first and then 4 was rolled second a) Write down the possible outcomes, i.e., the sample space. (b) List the outcomes in the following events: Event A: The number 4 came up zero times. Event B: The number 4 came up exactly one time. . Event C: The sum of the two rolls is odd...
7. (3 points) Given a fair 6-sided die. Each time the die is rolled, the probabilities of rolling any of the numbers from 1 to 6 are all equal. 1) If it is rolled once and let A be the event of rolling a number larger than 3 and B be the event of rolling an odd number. What is P(AV B)? 2) If it is rolled three times, what is the probability that the same number shows up in...
Suppose a six-sided die is rolled and the probability of each number occurring is proportional to itself, i.e. P(1) = 1k; P(2) = 2k : : :. Give the probabilities for each number being rolled so that the axioms of probability are satised. I thought the answer was 1/6 for each number, is this wrong?
A six-sided die is rolled 500 times. Use the CLT to approximate the probability that the sum of the rolls exceeds 1800.You’ll need to know the expectation (μ) & variance (σ2) of a single roll.
A 6-sided die rolled twice. Let E E be the event "the first roll is a 2" and F F the event "the second roll is a 2". (a) Are the events E and F independent? Yes or No: (b) Find the probability of showing a 2 on both rolls. Write your answer as a reduced fraction.
A 6-sided die rolled twice. Let E be the event "the first roll is a 5" and F F the event "the second roll is a 5". (a) Are the events E E and F F independent? Input Yes or No: (b) Find the probability of showing a 5 on both rolls. Write your answer as a reduced fraction. Answer: