![lucyfox8165](/avatars/35387.jpg)
lucyfox8165
21.02.2020 •
Mathematics
Alice and Bob each choose at random a number between zero and two. We assume a uniform probability law under which the probability of an event is proportional to its area. Consider the following events:
A: The magnitude of the difference of the two numbers is greater than 1/3.
B: At least one of the numbers is greater than 1/3.
C: The two numbers are equal.
D: Alice's number is greater than 1/3.
Find the probabilities P(A), P(B), P(C) and P(D).
Solved
Show answers
More tips
- B Business and Finance What is the Difference Between Visa and Visa Gold?...
- A Animals and plants Why do cats go crazy over catnip?...
- W Work and Career Everything You Need to Know About MBA Programs...
- S Sport How to Do Push-ups Correctly?...
- S Style and Beauty How to Grow Hair Faster: Real Methods and Advice...
- F Family and Home How to Remove Fading from Clothes: Tips and Tricks...
- F Food and Cooking How to Make Polendwitsa at Home?...
- F Family and Home Parents or Environment: Who Has the Most Influence on a Child s Upbringing?...
- P Philosophy Unbelievable stories of encounters with otherworldly forces...
- L Leisure and Entertainment How to Choose the Perfect Gift for Men on February 23rd?...
Answers on questions: Mathematics
- M Mathematics Mabel likes to golf. She is considering joining a golf club. Golf club membership costs $700. Members pay $15 per round of golf. Non-members pay $40 per round of golf....
- M Mathematics Help me and I’ll give brainliest to u...
- M Mathematics I need help with this...
- M Mathematics ) Danielle sells lemonade and orange juice. Each glass of lemonade costs $3. Each glass of orange juice costs $2. She writes the number patterns to represent the costs....
- M Mathematics What is the answer 1 - 0.5137...
- M Mathematics What is the equation of the line that passes through the point (8,−4) and has a slope of 1/2...
- M Mathematics Suppose that $2000 is loaned at a rate of 7%, compounded quarterly. Assuming that no payments are made, find the amount owed after 8 years. Do not round any intermediate...
- M Mathematics The choir sells tickets to its performances for an assortment of prices and gives some tickets away. The choir director wants to look at the relationship between the...
- M Mathematics Lucy has to buy a new wheel for her bike. The bike wheel has a diameter of 20 inches. If Lucy rolls the wheel one complete rotation along the ground, estimate how far...
- M Mathematics When comparing distance and time, time is always the Denominator Denominator Numerator Numerator Somewhere Somewhere...
Ответ:
Answer / Step-by-step explanation:
Before we start to answer this question, it would be nice to understand some basic definition and principles:
Random: This refers to an unpredictable pattern of arrangement. Without a specific aim or logical procedural pattern.
Uniform Probability distribution: This is a type of probability distribution in which the outcomes of distribution irrespective of the pattern or distance results in equally likely outcomes.
Uniform distribution is one of the widely used distributions although it's one of the simplest ones. The idea behind this distribution is that, unlike the other distributions, the likelihood of the any outcome in the distribution range is the same.
Now that we have a brief knowledge of the key terms within the question, hence, to start answering the question,
(a) Starting with 0 for Alice, Bob can choose any number starting from 1 / 3 . As Alice increases, Bob has to increase his starting point as well. Therefore, after Alice passes 1 / 3 , Bob can start choosing numbers from 0. This creates 2 triangles with sides 1 / 3 . The area of them gives us the probability.
Therefore, : P = 2 ( 1/3 1/3 1/3)
= 4/9
(b) We can find the probability of having both the numbers less than 1 / 3 . Then we subtract this probability from 1.
We have: P = 1 - 1/3 . 1/3
= 8/9
(c) This is basically impossible as the area of a dot is negligible.
(d) It means that Alice needs to select a number between 1 / 3 and 1.
Therefore: P = 1 - 1 /3
= 2 / 3
Ответ: