Study shows that 69% of people are more protective of their information while on wireless internet. What is the probability that among three randomly selected people, at least one of them is more protective when using wireless internet? Round to 2 decimal places.

Q: A national survey reported that 31% of adults in a certain country have hypertension (high blood…

A:

Q: In a recent year, the rate of U.S. home ownership was 65.9%. Choose a random sample of 120…

A: From the given information, it can be observed that the sample size is 120 and probability of U.S.…

Q: the probability that more than 17 of the students smoke?

A: Given : n=75 , p=0.277 , q=1-p=1-0.277=0.723 Here  np=75*0.277=20.7750>5 and…

Q: An experimental drug has been shown to be 80% effective in eliminating symptoms of allergies in…

A: If a participant is selected randomly, then there can be two possibilities either the drug is…

Q: The CDC estimates that a non-infected person has a 10% chance of contracting mumps from an infected…

A: The random variable X follows geometric distribution with probability 0.10. The geometric…

Q: About 8% of males are colorblind. Researcher needs the colorblind men for an experiment. What is the…

A: Given, n=9 p=8%=0.08

Q: The incidence of occupational disease in an industry is such that the workmen have a 20% chance of…

A:

Q: An experimental drug has been shown to be 85% effective in eliminating symptoms of allergies in…

A: If we have n trials each having two outcomes, say Success and Failure, trials being independent and…

Q: The percentage of female Americans 25 years old and older who have completed 4 years of college or…

A:

Q: A survey showed that 84% of adults need correction (eyeglasses, contacts, surgery, etc.) for their…

A: Let there are n trials and each having two outcomes - Success and Failure. The trials are…

Q: A survey showed that 73% of adults need correction ( eyeglasses, contacts, surgery,etc.) for their…

A: Let us denote X= the number of persons who need correction for their eyesight. n= number of trials =…

Q: A survey showed that 82% of adults need correction​ (eyeglasses, contacts,​ surgery, etc.) for their…

A: 82% of adults need correction​ (eyeglasses, contacts,​ surgery, etc.) for their eyesight. 19 adults…

Q: A researcher believes that 7% of female smoke cigarets if the researchers correct what is…

A: Calculation:Denote π as the true population proportion of female smokers. Hence, π = 0.07.Denote p…

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

A: Givenp=0.26n=12Let "x" be the couple having destination…

Q: A survey showed that 82% of adults need correction (eyeglasses, contacts, surgery, etc.) for their…

A: The probability that at least 18 of them need correction for their eyesight is 0.1191, which is…

Q: A national survey reported that 31% of adults in a certain country have hypertension (high blood…

A: Let X denote the no.of adults in a certain country have hypertension and it follows binomial…

Q: The CDC estimates that a non-infected person has a 10% chance of contracting mumps from an infected…

A: Here, the non-infected persons have a 10% chance of getting mumps from an infected person after 1…

Q: A survey by the American Automobile Association (AAA) revealed 60 percent of its members made…

A: Let p be the probability that a person had made airline reservation last year. Then, p=0.6.

Q: A survey showed that 74% of adults need correction (eyeglasses, contacts, surgery, dults are…

A: Given, p=74%= 0.74 n=18

Q: Recently, the top web browser had 57.41% of the market. In a random sample of 200 people, what is…

A:

Q: The CDC estimates that a non-infected person has a 10% chance of contracting mumps from an infected…

A:

Q: A survey showed that 79% of adults need correction (eyeglasses, contacts, surgery, etc.) for their…

A: Let p be the probability that an adult needs eyesight correction. Given that p = 0.79 Let X denote…

Q: Time magazine reported that when 19,218 gas masks from branches of the military were tested, it was…

A: The number of masks are tested is 19,218.

Q: A manufacturer of aspirin claims that the proportion of headache sufferers who get relief with just…

A: Givenproportion(p)=0.634sample size(n)=430Mean(μp^)=p=0.634standard…

Q: If one normal stapler selected randomly from the factories, find the probability when it comes from…

A: here define events and draw probability tree stapler produce by china Factory = C stapler produced…

Q: ) What proportion of students studied more than 35 hours? ) What is the probability that a randomly…

A: Let X denote the time spent studying the week before final exams. Given that X follows N(mean = 24,…

Q: A study conducted by a research group in a recent year reported that 57% of cell phone owners used…

A: The binomial probability distribution is, PX=x=nxpx1-pn-x In the formula, n denotes the number of…

Q: The rates of on-time flights for commercial jets are continuously tracked by the U.S. Department of…

A: The probability that exactly 15 flights arrive late is obtained below:Here, the flights which are…

Q: According to an American Laser Centers survey, 32% of adult men said that their stomach is the least…

A:

Q: A recent survey taken by Adecco of 1,047 employees found that 28% of them would lay off their bosses…

A: Let us denote X=the number of employees who would lay off their bosses. n=sample size= 10…

Q: A sample of 400 adults found that 82 have high blood pressure. However, 98 of those studies reported…

A: Given data, Total number of adults n=400 No of people that are unwilling to change diet =98 P(he or…

Q: A poll showed that 80.4% of Americans say they believe that you lose your body heat fastest through…

A: Given, P(they believe that you lose your body heat fastest through your head) = 80.4%=0.804   P(they…

Q: An Archer has a 25% chance of hitting the bullseye on a target. What is the probability that the…

A: Let X=the number of times of hitting the bullseye n=number of trials= 7 p=probability of…

Q: A study conducted by a research group in a recent year reported that 57% of cell phone owners used…

A: Binomial distribution: A discrete r.v. X taking values 0,1,2,3, …., n is said to follow a binomial…

Q: In a survey of US adults with a sample size of 2000, there are 1229 people who said Ronald Reagan…

A: We can select the first adult who said Ronald Reagan was the best president in 1229 ways.  We can…

Q: A national survey reported that 31% of adults in a certain country have hypertension (high blood…

A:

Q: A manufacturer of aspirin claims that the proportion of headache sufferers who get relief with just…

A: It is given that the proportion of headache sufferers who get relief with just two aspirins is 64%.

Q: Eight of the 50 digital video recorders (DVRs) in an inventory are known to be defective. What is…

A: It is given that 8 of the 50 digital video recorders in an inventory are known to be defective.

Q: According to a survey conducted by Tourism Malaysia, 70% of Malaysian companies give employees 25 to…

A:

Q: Based on a poll , among adults who regret getting tattoos , 25 % say that they were too young when…

A:

Q: A 2016 survey suggests that 90% of college students have posted a profile on Facebook 78% use…

A: Let,  A=the event of using Facebook B=the event of using Instagram   Given that: P(A)=90%=0.90…

Q: A nationwide survey of college seniors by a university revealed that almost 70​% disapprove daily…

A: Let's assume,  p= probability that seniors by a university disapprove daily pot smoking  n = number…

Q: A survey showed that 84​% of adults need correction​ (eyeglasses, contacts,​ surgery, etc.) for…

A: The density function of binomial distribution is:

Q: A manufacturer of aspirin claims that the proportion of headache sufferers who get relief with just…

A:

Q: Based on data from AMSC Online Instruction project, 77% of adult learners use social network sites.…

A: The probability of getting adult learners who uses the social network is 77%. The events of…

Q: The CDC estimates that a non-infected person has a 10% chance of contracting mumps from an infected…

A: Consider a random variable X which represents number of brief encounters before which a non-effected…

Q: In a study of helicopter usage and patient survival, among the 51,336 patients transported by…

A:

Q: The article “Unmarried Couples More Likely to Be Interracial” (San Luis Obispo Tribune, March 13,…

A:

Q: The rates of on-time flights for commercial jets are continuously tracked by the U.S. Department of…

A: Solution-: Given:  We find, P[Exactly 4 flights arriving on time ]=?

Q: A research study uses 500 men under the age of 55. Suppose that 30% carry a marker on the male…

A: From the given information, The population size is N=500 Sample size, n=10 P(carrying marker)=30%…