According to a 2020 article, 69% of men do not wash their hands after using a public restroom. Suppose a random sample of 40 men are selected. What is the probability that more than 25 of them will not wash their hands after using a public restroom? O 0.767 0.855 O 0.145 O 0.233

Q: A researcher wishes to conduct a study of the color preferences of new car buyers. Suppose that 30%…

A: Given that, The random variable X is the color preferences of new car buyers. 30% population prefers…

Q: In 2014, approximately 13% of nonelderly Americans adults had no health insurance. Suppose that a…

A: Given: Proportion of American adults having no health insurance, p=0.13 Sample size, n=400

Q: According to the National Center for Education Statistics, 17% of all people in the United States,…

A:

Q: Of students ages 16 to 18 with A or B averages who plan to attend college after graduation, 78%…

A: Probability that a student cheated to get higher grades : q = 0.78Therefore, Probability that a…

Q: ou wish to test the following claim (H1H1) at a significance level of α=0.001       Ho:p1=p2…

A: Given that,sample one, x1 =187, n1 =236, p1= x1/n1=0.7924sample two, x2 =283, n2 =317, p2=…

Q: A university claims that 70% of its athletes earn a degree.  Suppose that the records of 100…

A: 70% of the athletes earn a degree. 100 athletes are chosen at random. Define the Random Variable, X…

Q: According to a 2020 article, 69% of men do not wash their hands after using a public restroom.…

A:

Q: 8. 30% of the total of 150 students in a grade 12 class are going to prom. If 46 students are…

A: To solve this problem, we can use the hypergeometric distribution, which is ideal for scenarios…

Q: A nationwide survey of seniors by the University of Michigan reveals that almost 30.0% disapprove of…

A:

Q: 29% of automobile drivers state that they have driven while under the influence of alcohol. Suppose…

A: Given that  n = 4 , p = 29% = 0.29 , q = 1 - p = 1 - 0.29 = 0.71 X ~ Binomial (n = 4 , p = 0.29) X =…

Q: In a recent study, 65% of people surveyed indicate chocolate was their favorite flavor of ice cream.…

A: Given,n=11p=0.65Let X =no.of people name their favorite flavor of ice cream.X~Binomial(n=11 ,…

Q: 16 of the 200 digital video recorders​ (DVRs) in an inventory are known to be defective. What is the…

A: Given that, 16 of the 200 digital video recorders​  (DVRs) in an inventory are known to be…

Q: A study reports that 36% of companies in Country A have three or more femate board directors.…

A: Area on each tail for two tail test

Q: In a survey of 1383 people, 1033 people said they voted in a recent presidential election. Voting…

A: It is given that the sample size n is 1,383 and x is 1,033.

Q: If 10% of men are bald, what is the probability that fewer than 100 in a random sample of 900 are…

A: Solution:Binomial distribution approximated to normal distribution or not is checked below:It is…

Q: A poll reported that 63% of adults were satisfied with the job the major airlines were doing.…

A: Sample size(n)=20 Probability of success(p)=0.63 q=1-p q=1-0.63=0.37 A random variable…

Q: 10.2% of the population is 65 or older. Find the probability that the following number of persons…

A: According to the given information, we have Sample size, n = 20

Q: Atlantic Airways flights were late (arrived or departed 15 minutes late or more). A random sample of…

A: We have given that  Number of trials n=140 Success of probability p =20.4%=0.204 We use normal…

Q: A poll reported that 63% of adults were satisfied with the job of major airlines were doing. Suppose…

A: p=0.63 n=20 P(X=11)=?

Q: A researcher wishes to conduct a study of the color preferences of new car buyers. Suppose that 40%…

A:

Q: According to a 2020 article, 69% of men do not wash their hands after using a public restroom.…

A: This is a case of binomial probability. The formula for binomial probability is shown as follows: ,…

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

A: Givenp=0.23n=10x~Binomial(n=10,p=0.23)P(X=x)=(nx)×px×(1-p)n-x     ; x=0,1,...,n

Q: About 10​% of the population of a large country is nervous around strangers. If two people are…

A: The probability that a randomly selected people is nervous around strangers is 0.10. The probability…

Q: A study reports that 36% of companies in Country A have three or more female board directors.…

A: Percentage of companies in country A have three or more female board directors=36%p=0.36sample…

Q: According to the Federal Communications Commission, 70% of all U.S. households have vcrs.  In a…

A: If X is a discrete random variable with probability mass function P(x)=nCxpxqn-x;  0<p<1,…

Q: Suppose that 25% of fire alarms in a large city are false alarms. Approximate the probability that,…

A: Given that, Probability = 25% = 0.25 Sample size = 100

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

A:

Q: a. What is the probability that a person selected at random likes dogs and movies? b. What is the…

A:

Q: The proportion of individuals that regularly smoke in a population is known to be 0.25. What is the…

A: Given information: p=0.25 Sample size, n=100

Q: In a survey of 1401 people, 990 people said they voted in a recent presidential election. Voting…

A:

Q: The table below shows the probability outcomes when randomly choosing 7 millennial aged individuals…

A: given probabilities  Number of millennials that have at least one tattoo.       0 0.044…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.