Flipping Coins For a fair coin, the chance of getting tails is 1/2. Counting the number...
Flipping Coins For a fair coin, the chance of getting tails is 1/2. Counting the number of tails Let's experiment with the total number of tails in n trials. Total number of tails in a small number of coin flips n Suppose we flip 10 coins (with 1 = Tails and 0 = Heads). Here are six samples of size 10. - 10 trials = 6 for (i in 1: trials) { print (sample(c(0, 1), n, replace=TRUE)) ## [1] 0...
Fraction of tails Now let's look at the fraction of tails in n trials. Fraction of tails in a small number of coin flips Tails and 0 = Heads). n Suppose we Aip 10 coins and compute the fraction of tails (with 1 = - 10 trials - 6 for (i in 1: trials) { print (sun (sample(c(0, 1), n, replace=TRUE)) / n) 3 ## (1) 0.1 ## (1) 0.4 ## [1] 0.4 ## [1] 0.5 ## (1) 0.7 ##...
Fraction of tails Now let's look at the fraction of tails in n trials. Fraction of tails in a small number of coin flips Heads) Suppose we flip 10 coins and compute the fraction of tails (with 1 = Tails and 0 = = 10 trials = 6 for (i in 1: trials) { print (sum(sample(c(0, 1), n, replace-TRUE)) /n) ## [1] 0.1 ## [1] 0.4 ## [1] 0.4 ## (1) 0.5 ## [1] 0.7 *# (1) 0.6 The expected...
2. . Write the function below per the docstring. A tuple is simply comma separated data. In the function below, the tuple returned are 2 ints. def Htcounts (flips): "Given a list, flips, of H's and T's, returns a tuple of the number of H's and the number of T's, in that order. Uses 2 sum accumulators, one for number of heads, the other of the number of tails. Traverses the list, flips, with a for loop and uses booleans...
2. Mysterioso the Magician is walking down the street with a box containing 25 identical looking coins: 24 are fair coins (which flip heads with probabilty 0.5 and tails with probability 0.5) and one is a trick coin which always flips heads. Renata the Fox skillfully robs Mysterioso of one of the coins in his box (chosen uniformly at random). She decides she will flip the coin k times to test if it is the trick coin (a) What is...
Question 2 Suppose you have a fair coin (a coin is considered fair if there is an equal probability of being heads or tails after a flip). In other words, each coin flip i follows an independent Bernoulli distribution X Ber(1/2). Define the random variable X, as: i if coin flip i results in heads 10 if coin flip i results in tails a. Suppose you flip the coin n = 10 times. Define the number of heads you observe...
Suppose we flip a fair coin n times. We say that the sequence is balanced when there are equal number of heads and tails. For example, if we flip the coin 10 times and the results are HT HHT HT T HH, then this sequence balanced 2 times, i.e. at position 2 and position 8 (after the second and eighth flips). In terms of n, what is the expected number of times the sequence is balanced within n flips?
Random Number Generation and Static Methods Write a program that simulates the flipping of a coin n-times to see how often it comes up heads or tails. Ask the user to type in the number of flips (n) and print out the number of times the coin lands on head and tail. Use the method ‘random()’ from the Math class to generate the random numbers, and assume that a number less than 0.5 represents a tail, and a number bigger...
4. A fair two-sided coin is tossed repeatedly. (a) Find the expected number of tails until the first head is flipped. (b) Find the probability that there are exactly 5 heads in the first 10 flips. (c) Use the central limit theorem/normal approximation to approximate the probability that in the first 100 flips, between 45 and 55 of the flips are heads.
Probability Puzzle 3: Flipping Coins
If you flip a coin 3 times, the probability of getting any sequence is identical (1/8). There are 8 possible sequences: HHH, HHT, HTH, HTT, THH, THT, TTH, TTT Let's make this situation a little more interesting. Suppose two players are playing each other. Each player choses a sequence, and then they start flipping a coin until they get one of the two sequences. We have a long sequence that looks something like this: HHTTHTTHTHTTHHTHT.......