1. A coin is flipped 7 times.
No of ways in which 4 of these 7 flips are head = .
Probability of each head = 0.5
Probability of each tail = 0.5
Therefore, Probability that exactly 4 out of 7 are head = * 0.5n * 0.5(7-n)
= * 0.54 * 0.5(7-4) = * 0.54 * 0.53 = 0.273438
2. A 20 sided dice is rolled. The numbers on the face are from 1 to 20.
The size of the sample space, when the dice is rolled once = 20 ( 20 possible outcomes are possible).
The size of the set that corresponds to the event that dice roll is odd = 10 ( the odd outcomes in this event are {1,3, 5, 7, 9, 11, 13, 15, 17,19}.
The probability that all dice rolled are odd = 10/20 =0.5.
A fair coin is flipped 7 times. What is the probability that exactly 4 of the...
1. A fair coin is flipped four times. Find the probability that exactly two of the flips will turn up as heads. 2. A fair coin is flipped four times. Find the probability that at least two of the flips will turn up as heads. 3. A six-sided dice is rolled twice. Find the probability that the larger of the two rolls was equal to 3. 4. A six-sided dice is rolled twice. Find the probability that the larger of...
6. A fair coin is flipped repeatedly until 50 heads are observed. What is the probability that at least 80 flips are necessary? (You may calculate an approximate answer.)
2. A coin is altered so that the p coin is flipped three times as altered so that the probability of getting a head on every flip is 0.6. Suppose this (*) is flipping the coin a binomial experiment? Explain by checking if the four properties of binomial experiments are satisfied. (b) What is the probability that there are at least two heads? (c) What is the probability that an odd number of heads turn out in 3 flips? (d)...
A coin is flipped three times. What is the probability that the first and last flips are heads?
TEAFM2 4.6.024 A fair coin is flipped four times. least three times? What is the probability that heads occurs exactly 3 times if it is known that heads occurs at
What is the probability of getting 2 heads when a fair coin is flipped 4 times?
1. What is the probability that the sum of two dice is 7? 2. Given that in 4 flips of a fair coin there are at least two "heads", what is the probability that there are two "tails"?
Coin Flips: If you flip a fair coin 5 times, what is the probability of each of the following? (please round all answers to 4 decimal places) a) getting all tails? b) getting all heads?
A coin is flipped 30 times. What is the probability of getting 15 or more heads? Round answer to 4 decimal places.
7. A fair coin is flipped multiple times until it lands on heads. If the probability of landing on ( point) heads is 50%, what is the probability of first landing on heads on the third attempt? ○ 0,096 0.107 o 0.121 00.125