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Customers in a Queue

Customers arrive into a queue, where they are served, and then depart. We model the time between two successive arrivals by an exponential distribution with an arrival rate l=9. Similarly, the departure times are modeled by an exponential distribution with a departure rate m=10. Find the average number of customers in the que


I only need help with problems 1, 2, and 3. Please see the following website for the complete problems: 1. Suppose that the sample space S = {1, 2, 3, ...}. Let pk = Pr({k}) for k 2 S. In each of the following cases, compute c. (a) Suppose that pk

Probability: Sample Spaces

Please see for the fully formatted problems. Probability: This is where the homework 2 is found. I couldn't attach the files for some odd reason. But I ONLY NEED HELP ON PROBLEM # 2, 3, AND 4. 2. Let the sample space be S = {1, 2, 3, 4, 5}. Defi

Working with outcomes of probability.

I have been given a question to break a pin code of 5 digits, and to list all the outcomes. The numbers are between Zero and Nine. How do I go about doing this?

Probabilities from proportion tables

The following tables give the proportions of men and women in the U S population, and the proportions of men and women who have never married, in a recent year. men age proportion in population proportion never married 18-24 0.133 0.874 25-34 0.205 0.397 35-44 0.232 0.187 45-64 0.287 0.075 65 or over 0.142


You roll a dice twice. What is the probability that you will roll each of the following pairs of numbers. Please answer with explanation, and show formula. 1. 6 then 5 2. 6 then 2 or 5 3. 6 then number less than 4 4. even number then 2 or 5 5. 1 and 1 6. even number then odd number

Calculating the probability that the player wins in a game of craps.

The dice game craps is played as follows. The player throws two die, and if the sum is seven or eleven then she wins. If the sum is two, three, or twelve, then she loses. If the sum is anything else, then she continues throwing until she either throws that number again (in which case she wins) or if she throws a seven in which c

Conditional Probability Question

Find the probability of the following card hands from a 52-card deck. In poker, aces are either high or low. A bridge hand is made up of 13 cards. Calculate the bridge hand of 6 of one suit, 4 of another, and 3 of another.

Probability: Different Colours of Marbles

Question: A jar contains 3 white marbles, 2 yellow marbles, 4 red marbles, and 5 blue marbles. Two marbles are picked at random. What is the probability that a.) Both are blue b.) Exactly 1 is blue c.) At least 1 is blue

Probability: Considering Failure Rates

The records of Midwestern University show that in one semester, 38% of the students failed mathematics, 27% of the students failed physics, and 9% of the students failed mathematics and physics. A student is selected at random. a.) If a student failed physics, what is the probability that he or she failed mathematics? b.)

Working with probability and combinations.

There are 5 rotten plums in a crate of 25 plums. How many samples of 4 of the 25 plums contain (a) Only good plums? (b) Three good plums amd 1 rotten plum? (c) One or more rotten plums?

Calculating the probability from a given situation.

Mr. X invites 15 relatives to a party: his mother, three uncles, two aunts, four brothers, and five cousins. If the chances of any one guest arriving first are equally likely, find the following probabilities: a. the first guest is an uncle or a cousin b. the first guest is a brother or a cousin c. the first guest is an un

Using set theory to solve for the probability.

A survey of a group of military personnel revealed the following information: 95 officers 90 minorities 90 women 40 women officers 38 minority women 40 minority officers 23 women minority officers 16 caucasian male enlisted personnel How many personnel were: a. interviewed b. enlisted minority women c. male minorit

Card probability

In a 2-card hand, what is the probability of holding only face cards? (Aces are not face cards)


Suppose 6 people sit at a circular table. Find the probability that 2 particular people are sitting next to each other.

Lottery probability

A lottery game contains 29 balls numbered 1 through 29. What is the probability of choosing a ball numbered 30?

Determining the probability from a given situation.

For a certain animal species, the probability that a female will have a certain number of offspring in a given year is given in the table below. Find the expected number of offspring per year. Number of Offspring: 0 Probability: 0.31 Number of Offspring: 1 Probability: 0.21 Number of Offspring: 2 Probability: 0.19


If 3 boys and 2 girls are to be arranged in a row, what is the Probability that the first person in the row will be a boy?

Finding the probability from a given situation.

In a certain college, 33% of the physics majors belong to ethnic minorities. Find the probability of the event that, from a random sample of 10 students who are physics majors, 2 or less belong to an ethnic minority.

Find the probability

At the first tri-city meeting, there were 8 people from town A, 7 people from town B, and 5 people from town C. If the council consists of 5 people, find the probability of 3 from town A and 2 from town B.