The percentage of adult users of the Internet who use Facebook has increased over time (Pew Research Internet Project, 2013). Of adult Internet users age 18–49, 81% use Facebook. Of adult Internet users age 50 and older, 54% use Facebook. Assume that 52% of adult Internet users are age 18–49. a. What is the probability that a randomly selected adult user of the Internet is age 50 or older? b. Given that an adult Internet user uses Facebook, what is the probability that he/she is age 18–49?

Question

. The percentage of adult users of the Internet who use Facebook has increased over time
(Pew Research Internet Project, 2013). Of adult Internet users age 18–49, 81% use Facebook. Of adult Internet users age 50 and older, 54% use Facebook. Assume that 52% of
adult Internet users are age 18–49.
a. What is the probability that a randomly selected adult user of the Internet is age 50
or older?
b. Given that an adult Internet user uses Facebook, what is the probability that he/she is
age 18–49?

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Math
Probability

Conditional Probability

Related Probability Q&A

Find answers to questions asked by students like you.

Q: Wine Spectator rates wines on a point scale of 0 to 100. It can be inferred from the many ratings in...

A: Let us consider the rating of wines in a magazine is denoted by X which is assumed to be normally di...

Q: Find xổ.05 for x² distribution with 40 degrees of freedom. -0.05

A: Click to see the answer

Q: You are on a TV show. You have been asked to either play a dice game four times or accept a $50 bill...

A: There are six faces in a die The probability of rolling any number from 1 to 6 is 1/6. If you roll a...

Q: just question 7.16 please

A: Click to see the answer

Q: 36. Jamal Crawford of the National Basketball Association’s Portland Trail Blazers is thebest free-t...

A:   Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If...

Q: A company president always invites one of her three vice presidents toattend business meetings and c...

A: Required probability is 0.1317

Q: The time it takes an international telephone operator to place an overseas phone call is normally di...

A: Click to see the answer

Q: An insurance company models the number of claims filed by a policyholder under a vision care insuran...

A: From the given information, the random variable X follows Poisson distribution. with parameter 2.5 T...

Q: the contents os seven similar containers of sulfuric acid are 9.8, 10.2, 10.4,9.8,10.0,10.2 and 9.6 ...

A: Click to see the answer

Q: The mean ±1 sd of ln [calcium intake (mg)] among 25females, 12 to 14 years of age, below the poverty...

A: (8.2) Since you have posted a question with multiple sub-parts, we will solve first three sub-parts ...

Q: 5. Rather than keeping track of each demand observation, Betty Sucasas, a member of the marketing st...

A: Click to see the answer

Q: Consider a binomial experiment with two trials and p = 0.4.a. Draw a tree diagram for this experimen...

A: Click to see the answer

Q: The systolic blood pressure of individuals is thought to be related to both age and weight. For a ra...

A:    

Q: A pharmaceutical company has developed a test for a rare disease that is present in 0.3% of the popu...

A: Click to see the answer

Q: embark on a sightseeing trip. Due to space constraints at the facilities to be visited the organizer...

A: Click to see the answer

Q: A teacher says that the top 20​% of the class received an A on the last test. The scores were normal...

A: Obtain the minimum score required to get on A. The minimum score needed to get A and the top 20% of ...

Q: AT&T was running commercials in 1990 aimed at luring back customers whohad switched to one of th...

A: Let us define an event E such that the call is misdirected. Probability that the event E occurs is g...

Q: The mean ±1 sd of ln [calcium intake (mg)] among 25females, 12 to 14 years of age, below the poverty...

A: Click to see the answer

Q: A consumer agency wants to estimate the proportion of all drivers who wear seat belts while driving....

A: Click to see the answer

Q: Delivery times for shipments from a central warehouse are exponentially distributed with a mean of 2...

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean ...

Q: For the following item, calculate the missing information.   Round dollars to the nearest cent and p...

A: The cost of a bookcase is $42.70 and amount of markup is $20.10. Formula used: The selling price can...

Q: 2. A marketing research company desires to know the mean consumption of milk per week among males ov...

A: Solution (2) The provided information are: Margin of error (E) = = 0.08 Confidence level = 80% Popul...

Q: The joint density function of two continuous random variables X and Y is * p(x,y)=cx, O<x<4, 1<y<5 ....

A: The c value is calculated as follows:

Q: Solve it early

A: Given: The matrix P and its limiting matrix are given below.

Q: An article suggested that yield strength (ksi) for A36 grade steel is normally distributed with u = ...

A: Click to see the answer

Q: A city planner wants to estimate the average monthly residential water usage in the city. He selecte...

A: The sample mean is 3410.30 gallons. Population standard deviation, σ is 387.60 gallons. The sample s...

Q: A multinational corporation is considering starting a subsidiary in an Asiancountry. Management real...

A: Click to see the answer

Q: "Cash 5" is a 5/35 lottery. It is played in Arizona, Connecticut, Iowa, Massachusetts, North Carolin...

A: a) The lottery game is of 5/35 number. Calculation: The total number of ways in a 5/35 lottery to se...

Q: Billy’s Bakery bakes fresh bagels each morning. The daily demand for bagels isa random variable with...

A: Given: The distribution estimated from prior experience given by The decision Variable Q is the num...

Q: .Jamal Crawford of the National Basketball Association’s Portland Trail Blazers is thebest free-thro...

A: Note: Hi there! Thank you for posting the question. As your question has more than 3 parts, we have ...

Q: 11. A film processing service monitors the quality of the developing process with light-sensitive eq...

A: Given: When the quality of developing process with light sensitive equipment is monitored by a film ...

Q: An hour glass takes an average of 60 seconds to in thi of full cycle what probability of time does i...

A: Given that mean= 1 hour= 60 minutes  standard deviation = 5 minutes Let, X= time to empty a full cyc...

Q: For a normal random variable with mean 650 and standard deviation 40,find the probability that its v...

A: Given information- Population mean, μ = 650 Population standard deviation, σ = 40 Let X be the norma...

Q: If 120 scores are chosen from a normal distribution with mean 75 and standard deviation 8, how many ...

A: Given Information Mean (µ) = 75 Standard deviation (σ) = 8 Finding the probability for scores that w...

Q: What is the probability that the drawn card is not a 2?

A: Introduction: The probability of an event in an experiment is the number outcomes in the experiment ...

Q: Consider three boxes containing a brand of light bulbs. Box I contains 6 bulbsof which 2 are defecti...

A: Click to see the answer

Q: An article in The New York Times reports that several hedge fund managers now make more than a billi...

A: Given: Income of a manager in = $300 Additional 5% of the remaining income

Q: Yelp Dog Food produces specialized dog foods in 1-pound packages. The amount of dog food in each pac...

A: From the given information, the standard deviation of the machine filling is half an ounce. The samp...

Q: A population of values has a normal distribution with u = 11.9 and o = 21.7. You intend to draw a ra...

A: From the provided information, Mean (µ) = 11.9 Standard deviation (σ) = 21.7 Sample size (n) = 182 L...

Q: Jamal Crawford of the National Basketball Association’s Portland Trail Blazers is the best free-thro...

A: Note : - As per our policy we can answer only three sub-parts, please make a new requests for other ...

Q: A 11​-ft ladder is leaning against a wall and the wall is perpendicular to the ground. The base of t...

A: The given problem can be shown in pictorial form as below, Thus, using Pythagoras theorem we can ob...

Q: The average return for large­cap domestic stock funds over the three years 2009–2011was 14.4% (aaii ...

A: Let use denote: X=return for large­cap domestic stock funds over the three years 2009–2011 Given tha...

Q: A teacher gives a test with 17 questions. Students are allowed to choose any thirteen to answer. How...

A: Click to see the answer

Q: Two dice are rolled. Determine the probability of the following. ("Doubles" means both dice show the...

A: Introduction: It is assumed that both the dice are fair, so that the probability of each outcome, 1,...

Q: Assume that 9595 likely voters are asked their views: 4545 favor raising the gas tax, 4848 favor add...

A: Let us denote  G=gas tax, H=additional highway spending Given that n(G)=45, n(H)=48 , n(G and H)=21 ...

Q: The number of rescue calls received by a rescue squad in a city follows a Poisson distribution with ...

A:  

Q: a)It is claimed thata a vacuum cleaner uses an average of 46kwh per year. If a random sample of 34 h...

A: a)   Denote μ as the population mean power in kwh. It is needed to check, whether the vacuum cleaner...

Q: 46. A shipment of pins contains 25 good ones and 2 defective ones. At thereceiving department, an in...

A: Click to see the answer

Q: A businesswoman is considering whether to open a coffee shop in a local shopping center. Before maki...

A: From the available information, Sample size , n=26 (A)  The point estimate of the population mean is...