In a particular survey of internet​ users, 3616 respondents say that they use social networking sites and 1464 respondents say that they do not use social networking sites. What is the probability that a randomly selected person uses a social networking​ site? Does that result suggest that it is likely​ (with a probability of 0.5 or​ greater) for someone to use social networking​ sites?

Q: Adult Americans were asked if they felt that food packaging labels were truthful. Sixty-seven…

A: GIVEN DATA P( felt that food packaging labels were truthful) = p = 0.67 sample size (n) = 90 x = no.…

Q: n a recent survey of 619 Salinas residents, 437 stated they experienced significant traffic delays…

A: 437 stated they experienced delay 182 not experienced delay 619 total

Q: According to a market research firm, 52% of all residential telephone numbers in Los Angeles are…

A: Normal Approximation to Binomial :  The normal distribution can be used as an approximation to the…

Q: What is the probability a car with an alarm system had a CD player?

A: Define some events A : car had CD player. B : car had alarm system. Given that P(A) = 0.64, P(B) =…

Q: In the United States, voters who are neither Democrat nor Republican are called Independent. It is…

A: Let "X" be the voters who are independent. I will use excel formula "=BINOM.DIST(x, n, p, FALSE)"…

Q: A Harris Interactive national telephone poll in 2002 asked, "Do you think adults should be allowed…

A: Given: For the question asked in the national telephone poll, 80% of respondents answered, "Yes, it…

Q: A credit card company has a 0.01 default rate on its accounts. If 20 randomly selected accounts are…

A: Given information:A credit card company has a 0.01 default rate on its accounts. 20 randomly…

Q: A survey reported in USA Today indicates that 65% of small business owners favor drug testing for…

A: The probability of small business owners favoring drug testing for their employees is, The sample…

Q: According to​ statista.com, 66.7​% of U.S. households have Cable TV​ / Satellite TV. If six…

A: From the given information, the percentage of U.S households have Cable TV​ / Satellite TV 66.7% and…

Q: Based on a​ poll, ​63% of Internet users are more careful about personal information when using a…

A: Let us denote X=the number of internet users who are careful about personal information when using a…

Q: information when using a public Wi-Fi hotspot? How is the result affected by subjects volunteered to…

A: Given that  Number of trials n=4 Success of probability p=0.61 ,q=1-p=0.39 X~Bin(n,p)…

Q: The probability that a family owns a washing machine is 0.68 that it owns a DVD player is 0.81, and…

A: GivenP(family owns a washing machine)=0.68P(family owns a DVD player)=0.81P(family owns both washing…

Q: According to a national​ study, 32​% of taxpayers used computer software to do their taxes for a…

A: From the given information, 32​% of taxpayers used computer software to do their taxes for a certain…

Q: On average, 5.5 shoplifting incidents occur per week at an electronics store.  What is the…

A: Poisson Distribution :  A Poisson distribution is a discrete probability distribution that applies…

Q: It was estimated that 50% of students were seriously worried about job prospects, 35% were thinking…

A: Given that, 50% of students were seriously worried about job prospects 35% were thinking about their…

Q: In a particular survey of internet users, 3713 respondents say that they use social networking sites…

A: We want to find the probability

Q: In a particular university 33% students watch television, 18% students read newspapers and 10%…

A:

Q: A pew research center survey asked adults in the United States which technology would be very hard…

A: Given information P(Internet) = 0.7 P(Smartphone) = 0.6 P(email) = 0.3 P(Landline) = 0.25 No of…

Q: It was revealed that 5% of all automobiles in a city did not pass inspection. Of the next ten…

A:

Q: Based on a​ poll, 69​% of Internet users are more careful about personal information when using a…

A: Given Data Probability of success,p = 0.69 Probability of failure,q=(1- 0.69 )= 0.31…

Q: The Statistical Abstract of the United States reported that 18.2% of students whose post secondary…

A: Let X be the number of students whose post secondary degrees were health professions and related…

Q: A study showed that ​69.7% of occupants involved in a fatal car crash wore seat belts. Of those in a…

A:

Q: When someone buys a ticket for an airline​ flight, there is a 0.0989 probability that the person…

A: Given, The probability that the person will not show up for the flight is 0.0989 A certain jet can…

Q: Based on a​ poll, 61​% of Internet users are more careful about personal information when using a…

A:

Q: According to the Cable and Telecomm. Association for Marketing, 30% of cable television subscribers…

A: Given : n = 15 p = 0.30 Let X be the number of cable television subscribers.

Q: That should I buy? A study conducted by the Pew Research Center reported that 58% of cell phone…

A:

Q: Based on a​ poll, 70​% of Internet users are more careful about personal information when using a…

A: In this case, each surveyed user is inferred to have only options of being "more careful" (i.e.,…

Q: A study of 180 randomly selected American Airlines flights showed that 68 arrived late. What is the…

A: No. of American flights =180 No. of american flights arrived late=68

Q: A study assessed the accuracy of self-reported smoking status. Among self-reported nonsmokers, 92…

A: Formula: probability is the number of favourable response divided by total number of sample size.

Q: Privacy is a concern for many users of the internet. One survey showed that 62.5% of internet users…

A:

Q: In a survey, 25% of respondents said they watched football but not cricket, 15% said they watched…

A:

Q: According to a​ study, 65.8​% of college freshmen majoring in business said that​ "to get training…

A: Step 1:The given is a binomial distribution. A binomial distribution is the likelihood of observing…

Q: According to a certain​ country's department of​ education, 39.9​% of​ 3-year-olds are enrolled in…

A: Given that According to a certain​ country's department of​ education, 39.9​% of​ 3-year-olds are…

Q: Based on a​ poll, 67​% of Internet users are more careful about personal information when using a…

A: Given p = 0.67 and n =4 Let X be the number of Internet users who are more careful about personal…

Q: Based on a​ poll, 68​% of Internet users are more careful about personal information when using a…

A: p=0.68  _________________________ P(x≥1) = ?

Q: etter than those without cats? To help answer this question, a cat enthusiast obtained a random…

A: Do you have a Cat? Yes No How well do you sleep? Good Neutral Bad     Good…

Q: In a survey of 1234 people, 838 people said they voted in a recent presidential election. Voting…

A: Continuity correction factor table: If   P(X=n) use   P(n – 0.5 < X < n + 0.5)If   P(X > n)…

Q: Suppose the prevalence of type II diabetes in a community is 36%. Researchers want to sample 16…

A: Suppose the prevalence of type II diabetes in a community is 36%. Researchers want to sample 16…

Q: According to a government statistical​ organization, the unemployment rate for workers aged 22 to 25…

A: Given data: p = 5.7% Sample size (n) = 90 To find: a. What is the probability that 6 or fewer will…

Q: A labor statistician claims that 6% of the labor forces will be laid off likely  to pandemic impact.…

A: Solution: According to a labor statistician's claim, 6% of the labor forces will be paid off. Let p…

Q: Based on a​ poll, 68​% of Internet users are more careful about personal information when using a…

A:

Q: In a survey of consumers aged 12 and older, respondents were asked how many cell phones were in use…

A: