Mathematics, 25.11.2020 14:00, mega29

There are n people on a friendship-matchmaking app. We assume that each pair of people will connect and become friends with probability 0.1, independently of other pairs. Required:
a. You are one of the n people on the app. Let X be the random variable denoting the number of friends you will make on the website. Find the PDF of X.
b. What is the expected number of friends you will make on the app?
c. What is the probability that you will make at least 2 friends on the app?
d. What is the expected number of friendships formed on the app, i. e. what is the expected number of pairs that will connect and become friends?

Answers: 3

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 16:30, skye2598

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation

Answers: 3

continue

Mathematics, 21.06.2019 21:30, BARRION1981

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?

Answers: 1

continue

Mathematics, 22.06.2019 02:00, whathelppp

Pleasseee important quick note: enter your answer and show all the steps that you use to solve this problem in the space provided. use the circle graph shown below to answer the question. a pie chart labeled favorite sports to watch is divided into three portions. football represents 42 percent, baseball represents 33 percent, and soccer represents 25 percent. if 210 people said football was their favorite sport to watch, how many people were surveyed?

Answers: 1

continue

Mathematics, 22.06.2019 03:30, amariyanumber1923

Simplify the expression 8h - 57-3m by adding or subtracting the like term

Answers: 1

continue

Do you know the correct answer?

There are n people on a friendship-matchmaking app. We assume that each pair of people will connect...