Messages arrive at an electronic message center at random times, with an average of 8 messages per hour. (a)  What is the probability of receiving at most 6 messages during the next hour? (b)  What is the probability of receiving exactly 4 messages during the next hour?

Q: Assume that when adults with smartphones are randomly​ selected, ​59% use them in meetings or…

A: The probability that exactly 3 of them use their smart phones in meetings or classes is obtained…

Q: A lady makes an attempt to hit the target. The probability of hitting the target is 3/8. What is the…

A: Solution

Q: Students at a particular university must be in exactly one of the class ranks: freshman, sophomore,…

A: Given information- In university a particular students belongs to exactly one of the class ranks:…

Q: A bag contains 20 balls numbered from 1 to 20. One ball is drawn at random. Find the probability…

A:

Q: 10 students are in a row and randomly assigned numbers 1-10.  (a) What is the probability that…

A: 10 students are in a row and randomly assigned numbers 1 - 10.We are asked to find,(a) the…

Q: Jose has flipped a coin 5 times in a row and obtained heads 4 times. What is the probability that he…

A: Given: Probability of getting head = Number of headsTotal number of trials=12 Probability of getting…

Q: three coins are flipped until all heads appear. what is probability that all heads will appear on…

A: Geometric distribution: The probability mass function of Geometric distribution is P(n) = p(1 – p)n…

Q: You draw 3 letters from a hat (A - Z) at random without replacement, and write them in the order…

A: Given: Number of letters  = 26 Number of letters chosen = 3

Q: The probability of event A happening is 3/5 and the probability of event B happening is 2/3. What is…

A: Given:             Probability of occurrence of event A is 35.            Probability of occurrence…

Q: A class has 36 students. Each student studies either Math or Computer or both. 20 students study…

A: It is given that, 20 students study Math i.e. n(Maths) = 20 and 25 students study Computer i.e.…

Q: A box contains 3 red and 2 blue marbles. Find the probability that if two marbles are drawn at…

A:

Q: Suppose that you have a barrel with 7 apples and 8 oranges in it. If 2 fruits are selected, what is…

A: use formula : nCr=n!/(r!*(n-r)!)

Q: Research has shown that 12 patients visit a certain clinic in every 30 minutes. What is the…

A: This problem is based on poisson distribution. Poisson random variable is a discrete random variable…

Q: Determine the probability that two people out of 500 have a birthday on new year's day at least one…

A:

Q: A biased coin has a probability of of landing on heads. You toss the coin until it lands on heads.…

A:

Q: If the probability of seeing a ship from the beach in 1 hour is 0.35, what is the probability of…

A: Given that ,The probability of seeing a ship from a beach in hour is 0.35 .

Q: Probability scientist Atli decides to play in a lottery where there are many prizes on offer. The…

A: Let X represent the random variable   n=10 p=0.01   X~ Binomial (10, 0.01)

Q: A can hit a target three times in five shots, B two times in tive shots and C three times in four…

A:

Q: In the statistics, there 20 Malays, x Indians and 10 Chinese's students in a seminar and find the…

A:

Q: The probability of finding a gold card is 0.03. What is the probability that 2 out of 25 randomly…

A: