11.4% of the population is 65 or older. Find the probability that the following number of persons selected at random from 50 people are 65 or older65 or older. The probability that at leastleast 3 are 65 or older is   ​(Round to three decimal places as​ needed.)

Q: Find the probability that among 16 randomly selected people, at least 1 believes that college is no…

A:

Q: An analyst predicted that 3.5% of all small corporations would file for bankruptcy in the coming…

A:

Q: Based on a poll , among adults who regret getting tattoos , 38 % say that they were too young when…

A: given data,p(got their tattoos)=0.38q=1-p=1-0-38=0.62n=10x=No.of adults have tattoos

Q: In a particular survey of internet users, 3605 respondents say that they use social networking sites…

A: From the provided information, 3605 internet users say that they use social networking sites and…

Q: A.A safety engineer claims that only 40% of all workers wear safety helmets when they eat lunch at…

A:

Q: According to a report of the Neilson Company, 76% of internet searches used the Google search…

A: Formula : Binomial distribution is given by

Q: In a survey of 1030 ​people, 653 people said they voted in a recent presidential election. Voting…

A: It is known that, the mean of the sampling distribution of sampling distribution, p-hat is equal to…

Q: According to a recent report, 67%of Internet searches in a particular month used the Google search…

A: In this context, X denotes Internet searches. Here, X follows binomial distribution with n=22 and…

Q: Based on a USA Today poll, assume that 10% of the population believes that college is no longer a…

A: From the given information, the number of people are randomly selected n = 16. Let X be event that…

Q: According to a recent study, 1 in every 10 women has been a victim of domestic abuse at some point…

A:

Q: Assume that the probability of a being bor sample of 1168 volunteers. Find the most likely number of…

A: Solution

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

A:

Q: A manufacturer estimates that 1.5% of his output of a small item is defective. Find the probability…

A: We have to find probability using exact bínomial distributaion.

Q: According to a survey by the Administrative Management Society, one-half of U.S. companies give…

A: Given: Sample size of companies (n) = 6 Probability of a company giving vacation (p) = 0.5 Let X be…

Q: According to a recent study, 1 in 7 women has been a victim of domestic abuse at some point in her…

A: Solution: Let X be the random variable that the number of women  has been a victim of domestic abuse…

Q: In a survey, 63% of Americans said they own an answering machine. If 15 Americans are selected at…

A:

Q: If 2 of 20 tires are defective and 6 them are randomly chosen for inspection. What is the…

A: GivenTotal no.of tires(N)=20No.of tires are chosen(n)=6No.of tires are…

Q: Based on a​ poll, 62% of Internet users are more careful about personal information when using a…

A: Given Proportion of internet users more careful about personal information p = 0.67Total number of…

Q: find the probability that on a given day the fifth prescription written by a doctor for Valium is a.…

A:

Q: Assuming 10% rate, 12 people are randomly selected. Find the probability that at least 10 in 12…

A: Given that  n=12 , p=10%=0.10 , q=1-p=1-0.10=0.90 X~Binomial(n=12,p=0.10) X=Number of people who…

Q: a proportion of 0.4 are not satisfied with the service offered by the store. In a random sample of…

A: According to central limit theorem if the sample size n and population proportion p satisfies np≥10…

Q: The brand name of McDonald's has a 95% recognition rate. If a McDonald's executive wants to verify…

A: Let X be the number of consumers recognize the McDonald's brand name which follows binomial…

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

A: Probability that internet users are more careful about personal information when using a public WIFI…

Q: The Club reports that among individuals in the 28 to 32 age, 35% are football fans. If 200 people of…

A: We have given that p = 35% = 0.35 n = 200

Q: In a certain classroom at Cal State LA, 63% of the students get less than the recommended amount of…

A: Given data, p=63%=0.63 If n=8 P(X=3)=?

Q: A study conducted at Jolly Roger Sailing School shows that 47% of the School's graduates find a job…

A: Given information- We have given a problem of the binomial distribution. Proportion of the School's…

Q: A television commercial claims that 1 out of 5 of "today's marriages" begins as an online…

A: A random variable follows the binomial distribution if it satisfies the following conditions. There…

Q: Based on a poll , among adults who regret getting tattoos , 20 % say that they were too young when…

A:

Q: .What is the probability that exactly 20 of them used Google b. What is the probability that 15 or…

A: Let , X be the number of  Internet searches in a particular month used the Google search engine Here…

Q: According to a recent study, 1 in every 7 women has been a victim of domestic abuse at some point in…

A: Introduction: The binomial distribution is a discrete probability distribution. It is a finite case…

Q: Based on a poll , among adults who regret getting tattoos , 30 % say that the too young when they…

A: Given, p=30% = 0.3 n=5 q=1-p=1-0.3=0.7

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

A: We have to find out given probability.

Q: At a bakery, a customer with a purchase amount of under $20 has a probability of 0.35 of using a…

A:

Q: Current estimates suggest that 80% of the home-based computers in a foreign countr have access to…

A: Given : Probability of success,p = 0.80 Probability of failure,q=(1- 0.80)= 0.2…

Q: According to a study on teenage shopping behavior, it was found that 74% of female teens regularly…

A: Answer: Given that: p= 0.74 , n= 6 now will use Binomial probability P(X=x)=nx*px*(1–p)n–x,where…

Q: The number of lost-and-found requests received each day by a railroad ticket office is a random…

A: Solution: a. Let X be the number of lost-and-found requests received each day by a railroad ticket…

Q: A survey of all medium- and large-sized corporations showed that 65% of them offer retirement plans…

A: The normal distribution is the most useful theoretical distribution for continuous variables.…

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

A: The probability of an internet user uses a public Wi-Fi hotspot is 0.70.The number of randomly…

Q: A sample of 820 adults showed that 31 of them had no credit cards, 178 had one card each, 98 had two…

A: From the sample of 820 adults, 81 had three cards each and (31+178+98+90+342)= 739 had other than…

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

A:

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: 7 percent of all cooling fans produced in a factory are defective. A quality inspector randomly…

A: Let p be the probability that a fan is defective. Given that p = 7% = 0.07 Let X denote number of…

Q: An engineering school reports that 55% of its students were male (M), 31% of its students were…

A: The probability that the students  are male is 0.55. The probability that the students are between…

Q: According to data from the American Medical Association, 10% of the population is left-handed. If 5…

A:

Q: The IRS indicates that 90% of all tax returns are filed electronically. Assume that figure is…

A: Let p be the proportion of all tax returns are filed electronically. Given that p = 0.9 Sample size…

Q: A Gallup poll of 1,236 adults showed that 14% believe that bad luck follows if your path is crossed…

A: Given, n=1236 p=14100=0.14

Q: Based on a poll, 60% of adults believe in reincarnation. Assume that 4 adults are randomly selected,…

A: Given that, Probability, p =60%=0.60 Sample size, n = 4

Q: Suppose that one third of the new buildings in Centra City are in violation of the building code. If…

A: Let us denote X=the number of building that violate of the building coden=sample size=5p=probability…

Q: A sample of 4 different calculators is randomly selected from a group containing 20 that are…

A: Given,no.of defective calculators=20no.of non defective calculators=10total no.of calculators=30

Q: Based on a​ poll, among adults who regret getting​ tattoos, 23% say that they were too young when…

A: Given,n=10p=0.23Let X=no.of adults to get tattoosX~Binomial(n=10  ,  p=0.23)P(X=x)=10x…

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.