. If a single coin is flipped four times, find the probability that two or more heads occur.

Q: A class is composed of 20 boys and 25 girls. If a pupil is called to recite, what is the…

A: Given  A class is composed of 20 boys and 25 girls. If a pupil is called to recite, what is the…

Q: If a coin is tossed three times, the probability of getting the same face for all three tosses is:…

A:

Q: The probability that a face card is   ​selected, given that a queen is   selected is

A: Note that queen is a face card itself. So if a queen is selected then we obviously get a face card.…

Q: If a card is chosen at random from a pack of cards, what is the probability that the card is from…

A: From the provided information, Total number of cards in standard deck = 52 Total black cards = 26…

Q: If you flip a coin 18 times and get 14 heads and four tails, what is the probability that there is…

A: Given: 14 Heads  4 Tails flipped 18 coins

Q: Suppose that the probability that a child living in an urban area in the US is obese is 20%. A…

A: The pmf of the binomial random variable with parameters n = 10 and p = 0.20 is given as follows:

Q: What is the probability two people in a classroom of 25 have the same birthday?

A:

Q: In one​ lottery, a player wins the jackpot by matching all five numbers drawn from white balls​ (1…

A: He can select 5 numbers from 45 numbers in 45C5=1221759 ways He can select a number from 32 numbers…

Q: when a die is rolled, what is the probability that a four will appear on the top face?

A: We have given that when a die is rolled, the sample space isS = {1, 2, 3, 4, 5, 6 }

Q: If a dice is rolled, what is the probability that a 3 or 4 is rolled before a 6

A: We have given that,  When a dice is rolling,  Then,  We will find the probability a 3 Or 4 is rolled…

Q: Suppose you roll a special 21-sided die. What is the probability that the number rolled is a "1" OR…

A: Given: A 21-sided die is rolled.

Q: You draw one card at random from a standard deck of 52 playing cards. What is the probability that…

A:

Q: If 5 persons are to be seated in a round table, what is the probability that a certain boy and girl…

A:

Q: In one lottery a player wins the jackpot by matching all five numbers drawn from white balls (1…

A:

Q: If two fair dice are thrown, find the probability that the sum is between 6 and 8, inclusive.

A: Total number of possibilities:

Q: If you select one card at random from a standard deck of 52 cards, what is the probability that the…

A:

Q: A weighted coin with Pr[H]=0.3Pr[H]=0.3 is flipped 3 times. What is the probability the first and…

A: Given, P(H)=0.3 P(T)=1-P(H)        =1-0.3     =0.7 Number of flips=n=3

Q: If 63% of the people at a certain conference are doctors, 48% are women, and 39% are doctors, what…

A: The following information has been given: The probability that people at a certain conference are…

Q: Suppose you roll a special 22-sided die. What is the probability that the number rolled is a "1" OR…

A: In a 22-sided die, there are 22 outcomes, such that, 1, 2, 3, …., 21, 22.

Q: Suppose you roll a special 38-sided die. What is the probability that the number rolled is a "1" OR…

A: Given information- We have given a special die of 38-sided. We have to find the probability of…

Q: What is the probability that in 100 spins the number of grand prizes is 27 or more

A:

Q: If a single die is rolled seven times, what is the probability it lands on 3 on the second, third,…

A: A single die is rolled seven times.Probability that a die rolled will land on three = 1/6Probability…

Q: (b) What is the probability that exactly 4 of the same color are drawn?

A: We have given that  A deck of cards contains 24 cards: 10 red cards and 14 black cards. 5 cards are…

Q: If 5 cards are drawn from a standard deck of playing cards, what is the probability that exactly 3…

A:

Q: When two number cubes labeled 1-6 are rolled, what is the probability that the result will be two…

A:

Q: In one​ lottery, a player wins the jackpot by matching all five numbers drawn from white balls​ (1…

A: Note: The number of white balls is considered as 42 and number of gold balls considered as 33. It…

Q: If 9 cards are dealt from an ordinary deck of 52 playing cards, what is the probability that exactly…

A: Solution: A standard deck of 52 playing cards contains 4 kings and 52–4=48 are non-kings. Here, 9…

Q: Find the probability that a person flipping a coin gets (a) the fifth head on the seventh flip, and…

A: Let X be a random variable which represent the number of tosses to get 5 heads. The probability to…

Q: If a biased coin has a probability of heads that is twice the probability of tails and is flipped…

A: For a biased coin, Consider the probability of occurring tails = x The probability of heads is twice…

Q: Find the probability that either a 6 or 7 will be obtained in one toss of a pair of dice.

A:

Q: What is the probability of rolling a number less than 4 or an odd # on a single di?

A: We have to calculate the probability of rolling a number less than 4 or an odd on a single die

Q: If three coins are​ flipped, what is the probability of obtaining at least one head​?

A:

Q: You draw one card at random from a standard deck of 52 playing cards. What is the probability that…

A: Probability = number of outcomes/ total outcome

Q: Find the probability that a person flipping a coin gets​ (a) the eighth head on the twelfth ​flip,…

A: Let X be a random variable which represent the number of tosses to get 8 heads. The probability to…

Q: Find the probability that a person flipping a coin gets the second head on the fifth flip?

A:

Q: If one card is drawn from a well-shuffled bridge deck of 52 playing cards, what is the probability…

A: It is known that Number of Jack = 4 Number of spades = 13 Number of jack and spade = 1 Total cards =…

Q: A lottery game has balls numbered 1 through 11. If a ball is selected at random, what is the…

A: We have given  A lottery game has balls numbered 1 through 11 n=11  A=even number=(2,4,6,8,10)…

Q: What is the probability of rolling a two on the first die and a three on the second die?

A: Two dies are rolled.

Q: An urn contains 40 red balls, 30 green balls, 25 blue balls, and 10 yellow balls. If Alicia randomly…

A: Given, A urn contains 40 red balls, 30 green balls, 25 blue balls and 10 yellow balls. Probability =…

Q: A pair of dice is tossed. If the numbers appearing are different, find the probability that sum is…

A: Possible outcomes when we toss two coins are,

Q: Give that a standard deck of cards contains 52 cards, if you select a single card at random from a…

A: Given data: n(S)=52   Let A be the event of an even number of Spade n(A)=5

Q: is the probability that customers B and E arrive before other customers?

A: Here 7 different customers A,B,C,D,E,F and G Here use total arrangement concept

Q: Suppose you roll a special 45-sided die. What is the probability that the number rolled is a "1" OR…

A:

Q: If a single die is rolled four times, what is the probability it lands on 4 on the first, second,…

A:

Q: If 4% of the population is color blind, what is the probability that a group of 30 people, exactly…

A: If 4% of the population is color blind, what is the probability that a group of 30 people, exactly…