WebDec 5, 2014 · How many people must be there in a room to make the probability 100% that at-least two people in the room have same birthday? Answer: 367 (since there are 366 possible birthdays, including February 29). WebThe Monty Hall problem is a brain teaser, in the form of a probability puzzle, loosely based on the American television game show Let's Make a Deal and named after its original host, Monty Hall.The problem was originally posed (and solved) in a letter by Steve Selvin to the American Statistician in 1975. It became famous as a question from reader Craig F. …
Bertrand paradox (economics) - Wikipedia
WebApr 10, 2024 · The expected value of a random variable X is the long-run limiting average of the values X takes in repeated trials. The expected value of a random variable is analogous to the mean of a list: It is the balance point of the probability histogram, just as the mean is the balance point of the histogram of the list. WebNov 14, 2024 · According to Scientific American, there are 23 people needed to achieve the goal. ( 23 2) = 253 1 − ( 1 − 1 365) 253 ≈ 0.50048 However, I have a different approach but I'm not sure if this is correct. One could be any day in a year. And 23 people would be 365 23 possibilities. Suppose no one in 23 people has the same birthday. simple weekly meal planner
Editorial: Why did Chicago get another Democratic National …
The two envelopes problem, also known as the exchange paradox, is a paradox in probability theory. It is of special interest in decision theory, and for the Bayesian interpretation of probability theory. It is a variant of an older problem known as the necktie paradox. The problem is typically introduced by formulating a hypothetical challenge like the following example: Imagine you are given two identical envelopes, each containing money. One contains twice as … Weball have different birthdays and that the kth person’s birthday coincides with one of the first k −1 people. This probability is p n,k−1 ·(k −1)/n. So, the expected number of people … simple weekly meal planner template