Facebook According to Pew Research, 50% of adultsand 75% of teenagers were using a social networking site in early 2012. Most of that activity was on Face-book. Let’s assume these probabilities apply strictly to Facebook (after all, MySpace is empty, right?) Among agroup of 10 people, what’s the probability thata) at least one of the people was not on Facebook if theywere all adults?b) at least one of the people was not on Facebook if theywere all teenagers?c) at least one of the people was not on Facebook if halfwere teenagers?

Q: The 118 passenger list for a particular flight includes five terrorists. What is the probability…

A: Here, n = 20. Consider X denotes the passenger is terrorists. The probability of success is, p=5118…

Q: A rare type of HPV virus affects 1% of the population in a state. A new test is designed to detect…

A: Given ,  P( Infected ) = 0.01 ,  P( Uninfected ) = 1 - 0.01 = 0.99 P( Positive | infected ) = 0.97…

Q: It was revealed that in New York 8% of all automobiles in the state did not pass inspection. Of the…

A: 1. Suppose a random variable X, defines that the number of automobiles in the state that did not…

Q: A survey of athletes at a high school is conducted, and the following facts are discovered: 38% of…

A: P( athletes playing football) = P(F) = 0.38 P( athletes playing basketball) = P(B) = 0.28 P(…

Q: In a group of 100 high school students, 30% are on the high honor roll and 70% are on at least one…

A: The probability of A and B (independent events): p(A and B) = p(A) × p(B).

Q: What is the probability of randomly selecting all seniors to form a committee of three from a pool…

A: we have to find given probability.

Q: The Board of Directors of AIA Company consists of 14 members, 3 of whom are women. A committee of 3…

A: Given data The Board of Directors of AIA Company consists of 14 member. 3=  women. Therefore ,  men…

Q: A survey of athletes at a high school is conducted, and the following facts are discovered: 26% of…

A: Given that  A survey of athletes at a high school is conducted. 26% of athletes are football…

Q: Progressive has found 7% of all policy holders were in a car wreck last year if 13 policy holders…

A:

Q: Suppose that 70% of students in Prof. Leen’s statistics class do their homework regularly and 65%…

A:

Q: Three students from a 13 student class will be selected to attend a meeting. 9 of the students are…

A:

Q: A survey of athletes at a high school is conducted, and the following facts are discovered: 53% of…

A: Solution: Let A be the event that the athletes are football players. P( A) = 0.53 B be the  event…

Q: The workers union at a particular university is quite strong. About 94% of all workers employed by…

A: We have to find given probability.

Q: If eggs are laid and there is a 70% chance of them hatching   If there are 8 eggs, what is the…

A: It is an important part of statistics. It is widely used.

Q: 3) Joyce is flying from San Francisco to Boston with a connection in Chicago. If the first flight is…

A: Consider a following events:   A: the flight from San Francisco to Chicago is on time B: the flight…

Q: When someone buys a ticket for an airline flight, there is a 0.0971 probability that the person will…

A: It is provided that the probability (q) of the person who buys a ticket for an airline will not show…

Q: Suppose 38% of the teachers at a high school are male teachers. What is the probability that of your…

A: In question, Given that 38% of the teachers at a high school are male teachers. Then we'll find the…

Q: A survey of athletes at a high school is conducted, and the following facts are discovered: 28% of…

A: Consider an event F that defines that a randomly selected player is a football player and consider…

Q: A survey of athletes at a high school is conducted, and the following facts are discovered: 20% of…

A:

Q: Three students from a 21 student class will be selected to attend a meeting. 8 of the students are…

A: The number of female students is 8 and the total number of students is 21.

Q: A survey of athletes at a high school is conducted, and the following facts are discovered: 6% of…

A: It is given that P(football) = 0.06 P(basketball) = 0.70 P(football and basketball) = 0.04

Q: A radio device consists of 1000 electronic elements. The probability of nonoperation for one element…

A: Given,n=1000p=0.001λ=npλ=1000×0.001=1A random variable X~Poisson(λ=1)P(X=x)=e-11xx!  ;    x≥0

Q: 3) Suppose that among employed women, 25% have never been married. Suppose we randomly sample women…

A: Given that, among employed women, 25% have never been married p=0.25 We have to find probability…

Q: Suppose eight students in a statistics class of 12 students are sophomores. What is the probability…

A: Total students = 12Sophomores = 8 Not sophomores = 12 - 8 = 4

Q: horse race has 10 entries and one person owns 2 of those horses. Assuming that there are no​ ties,…

A: Number of ways in which 2 horses are chosen from 10 entries for first and second position.

Q: The workers union at a particular university is quite strong. About 94% of all workers employed by…

A: Let the random variable X denote the no. of workers employed by the university belong to the…

Q: about 7% of the population of a large country is nervous around strangers. If two people are…

A: The probability that both are nervous around strangers is,

Q: Ten percent of people in Western countries consider themselves lucky. If 3 people are selected at…

A: Given, It is an example of binomial distribution with parameters n = 3,p =0.1    A probability mass…

Q: Over the course of a shipping season, 50% of the boats entering Winnipeg Harbour are registered in a…

A: Let x be the number of ships registered in foreign country and x~Bin(n=10, p=0.50) prob.  of x…

Q: A company makes pens called “Surprise Ink.” All of these pens look identical on the outside, but…

A:

Q: A survey of athletes at a high school is conducted, and the following facts are discovered: 34% of…

A: Obtain the probability that the athlete is either a football player or a basketball player.   The…

Q: A survey of athletes at a high school is conducted, and the following facts are discovered: 29% of…

A:

Q: 80% of U.S. drivers over the age of 30 have had a speeding ticket and 55% of those have also been in…

A: Given,         Pspeeding ticket=0.80         Paccident while behind the wheel=0.55

Q: There are 400 seniors in highschool, of which 180 are males. It is known that 85% of the males and…

A: Given,

Q: According to TMUSS Quarterly (Totally Made-Up Sports Statistics) April 2017, the probability that…

A: It is given that, The probability that their defense will have 3 or more sacks in the game is 0.24…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.