On most social media platforms, 74% of all ads are targeted ads. Ad-blockers attempt to block such targeted ads before they are delivered to the use One such ad-blocker has a 56% chance of blocking an ad if it is actually targeted, and a 20% chance of blocking an ad that is not targeted. a. If an ad is blocked by the ad-blocker, what is the probability that it was not a targeted ad? Answer in exact fraction, or rounded to at least 4 decimal places b. If the user is served an ad which was not blocked, what is the probability that it was targeted? Answer in exact fraction, or rounded to at least 4 decimal places

Q: According to a study, 74% of K-12 schools or districts in a country use digital content such as…

A:

Q: Based on a smartphone survey, assume that 42% of adults with smartphones use them in theaters. In a…

A: Given, P=42% of people of people use smartphones in theatres. no. of people use smartphones in…

Q: Of the patients at a cardiac rehabilitation centre, 37% lead a sedentary lifestyle and have had a…

A: 37% lead a sedentary lifestyle and have had a heart attack82% of the patients lead a sedentary…

Q: According to a study, 79% of K-12 schools or districts in a country use digital content such as…

A: Let,Event D = Schools or districts in a country use digital content.Event C = Schools use digital…

Q: Eighty-two % of trees planted by a local landscaping company survive. In a random sample of 200…

A: Solution

Q: In one study, researchers at a clinic looked at more than 120,000 patients enrolled in 14…

A: Given Information:  Researchers at a clinic looked at more than 120,000 patients enrolled in 14…

Q: A tine test is commonly used to determine whether a person has been exposed to tuberculosis.…

A: A tine test is commonly used to determine whether a person has been exposed to tuberculosis.…

Q: 72% of all violent felons in the prison system are repeat offenders. If 43 violent felons are…

A: Consider X denotes, violent felons in the prison system who are repeat offenders.Here, n = 43 and p…

Q: Eight percent of Americans have a master’s degree. If five Americans are selected at random, what is…

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Q: Assume that the critic finds that 25 percent of the movies have positive comments about the plot, 40…

A: The event A is defined as the movies have positive comments about the plot, event B is defined as…

Q: Eight percent of Americans have a master’s degree. If five Americans are selected at random, what is…

A: Let X represent random variable   n=5 p=0.08   X~ binomial (5, 0.08)

Q: Twenty percent of all undergraduates at a university are chemistry majors. In a random sample of…

A: Given information:Population proportion (p) = 20%                                         p =…

Q: 63% of all Americans are home owners. If 37 Americans are randomly selected, find the probability…

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Q: ts have allergies.  A test for allergies correctly diagnoses the presence of an allergy in 85% of…

A: Define the following events : A: Proportion of people having allergy B: proportion people which do…

Q: Based on a smartphone survey, assume that 40% of adults with smartphones use them in theaters. In a…

A: Given proportion of adults using smartphones in theatres = p = 0.40.the total adults with smart…

Q: Approximately 10.3% of high school students drop out of school before graduation. From a random…

A: Let p be the probability of high school students drop out of school before graduation  n=Sample  X…

Q: Assume the readings on thermometers are normally distributed with a mean of 0°C and a standard…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: Based on a smartphone​ survey, assume that   42​% of adults with smartphones use them in theaters.…

A:

Q: accounting professor claims that no more than one quarter of undergraduate business students will…

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Q: Based on a smartphone survey, assume that 60% of adults with smartphones use them in theaters. In a…

A:

Q: 58% of all violent felons in the prison system are repeat offenders. If 43 violent felons are…

A: Given that, p=58%=0.58 q=1-p=0.42 n=43

Q: In a classroom survey, 18 out of 30 students reported that they have a car. What is the probability…

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Q: Twenty-six percent of couples who plan to marry this year are planning destination weddings. In a…

A: Given that, Twenty-six percent of couples who plan to marry this year are planning destination…

Q: The probability that an adult possesses a credit card is .65. A researcher selects two adults at…

A: P(posseses credit card ) = p = 0.65 So q  =1-p = 0.35 Select two at random

Q: In a population where 34%34% of voters prefer Candidate A, an organization conducts a poll of 1010…

A: Let, X= number of voters who will prefer candidate A. Given that the probability of voters who…

Q: A  survey was done to see which platform people prefer the most.    Facebook Instagram Snapchat…

A: Let us take the probability of choosing someone who prefers Instagram as P(A) and the probability of…

Q: 12 schools or districts in a country use digital content such as ebooks, audio books, and digital…

A: Given n=10 x=4

Q: A survey reports that 53% of college students use Google as their search engine. If 100 students of…

A: Given that n=100 p= 0.53 q= n-p=0.47 μx= n*p= 53 Standard deviation= σ= sqrt(n*p*q)=4.991   Add…

Q: 5. Out of all registered vehicles in California, 95% of them pass the State Emissions Test. If ten…

A: Given information Probability of passing the emission test p = 0.95 10 vehicles are selected X…

Q: In a popular online role playing game, players can create detailed designs for their character's…

A: P(s)= 237+17+24= 278 P(n)= 237+17= 254

Q: 26% of all college students major in STEM (Science, Technology, Engineering, and Math). If 30…

A:

Q: According to a study, 74% of K-12 schools or districts in a country use digital content such as…

A: Given datan=10x=5p∧=xn=510=0.5Po=74%=0.74

Q: Patient Weight before Weight loss program Weight after Weight loss program A 150 148 B 220…

A: Solution. Answer : Option C We DO NOT reject Ho. There is NOT statistically significant evidence to…

Q: A car dealership sells two types of cars: sedans and SUVs. The dealership conducted a survey and…

A: Answer Calculation:1. Total number of customers surveyed = 2002. Number of customers who purchased…

Q: 20% of teenagers in a small town say they like reading news online. Suppose you randomly select 7…

A: Solution: Let X be the number of people say they enjoy reading news online and n be the sample…

Q: 34% of all college students major in STEM (Science, Technology, Engineering, and Math). If 36…

A: As per our guidelines we are suppose to answer three sub parts.…