Not all visitors to a certain company's website are customers. In fact, the website administrator estimates that about 12% of all visitors to the website are looking for other websites. Assuming that this estimate is correct, find the probability that, in a random sample of 4 visitors to the website, exactly 2 actually are looking for the website. Round your response to at least three decimal places. (If necessary, consult a list of formulas.)

Q: From experience, the manager of Kramer's Book Mart knows that 60% of the people who are browsing in…

A: Given,n=10p=0.6q=1-0.6=0.4A random variable X~Binomial(n=10 , p=0.6)P(X=x)=Cx(0.6)x(0.4)10-x    ;…

Q: A campus student club distributed material about membership to new students attending an orientation…

A: Let M be the men, W be the women, And J be the they joins the club. We have given information with…

Q: A marketing company has randomly surveyed 204 men who watch professional sports. The men were…

A: As per guidelines expert have answer first question only...

Q: The table below shows the results of a survey in which tablet users were asked how often they would…

A: From the given information we find the probability.

Q: Blood pressure: High blood pressure has been identified as a risk factor for heart attacks and…

A: The given values are:Proportion of U.S. adults with high blood pressure, p = 0.3Sample size, n =…

Q: A student takes a ten-question true-false quiz, but did not study and randomly guesses each answer.…

A: Given: Number of questions = 10Probability of getting correct =1/2 =  0.5 (because it is a true -…

Q: As part of its quality-control program, the video-game DVDs produced by Starr Communications are…

A: Let X= number of defective DVDs The probability of getting a defective DVD is 2.5%= 0.025  Number of…

Q: The following data indicates the prize distribution for a small lottery of 500 tickets conducted at…

A: Total number of lottery tickets are 500. Given that 1 ticket has $1000 prize and 60 tickets have…

Q: What is the probability that a randomly selected survey participant prefers the NFL? (Round to four…

A: Note : According to our guidelines we are solving only first three sub-parts of a question and the…

Q: When studying radioactive​ material, a nuclear engineer found that over 365​ days, 1,000,000…

A: Given that 25160 atoms decayed during 365 days. a. Find the mean number of radioactive atoms that…

Q: The​ three-year recidivism rate of parolees in a certain state is about 20​%; that​ is, 20​% of…

A:

Q: A certain prescription drug is known to produce undesirable side effects in 35​% of all patients who…

A: Solution: Let X be the number of patients have undesirable side effects who use drug and n be sample…

Q: Based on a poll, among adults who regret getting tattoos, 28% say that they were too young when they…

A: Here, we have to find probability that none of the selected adults say that they were too young to…

Q: A 2005 Gallup Poll found that 7% of teenagers (ages 13 to 17) suffer from arachnophobia and are…

A: From the provided information, 7% of teenagers (ages 13 to 17) suffer from arachnophobia and are…

Q: Use the blood Alcohol Concentration chart to determine the likelihood a 140 pound (lbs) female will…

A: Solution: Given data, R = 6e (12.77x)

Q: Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the…

A: Solution: It is given that, Population mean, 70 Standard deviation, 5 Given that Cody took his first…

Q: One environmental group did a study of recycling habits in a California community. It found that 73%…

A: Given,n=383p=0.73mean(μ)=npμ=383×0.73=279.59standard deviation(σ)=np(1-p)σ=383×0.73×(1-0.73)σ=8.6885

Q: Suppose that we know that 33.8% of the people born in the United States between 1936 and 1951 have…

A: The given situation follows binomial distribution. The proportion of people born in United States…

Q: Based on a​ poll, among adults who regret getting​ tattoos,15​% say that they were too young when…

A: given dataP(too young) = p = 0.15n = 10x = No. of people say too youngp(x=X) = nxC * px * qn-x…

Q: Use all of the data from the “Race or Ethnic Group of Mother” table to find the probability that a…

A: Obtain the probability that a baby born in California would be a girl.   The probability that a baby…

Q: In the US, 10.5% of the population is diabetic. What is the probability that in a random sample of…

A: Suppose p is the true proportion of diabetic people in the U.S.

Q: The table below shows the results of a survey about a junk food tax.     Support Oppose Unsure Male…

A: The contingency table related to the results of a survey about the junk food tax is given…

Q: Based on data, an insurance company estimates that a particular customer from a certain group has a…

A: It is given that-Probability that the customer will have accident next year = 0.039Average insurance…

Q: The opera theater manager calculates that 32 % of the opera tickets for tonight's show have been…

A: The opera theater calculates that 32% of the opera tickets for tonight's show have been sold. That…

Q: Suppose that 40% of adult Canadians believe that Canada should apply to host the next soccer World…

A: It is given that 40% Canadians believe that Canada should apply to host the next soccer World cup. A…

Q: The U.S. housing market estimates that 31% of all homes purchased in 2019 were considered investment…

A: given data p = 0.31n = 800P(250<x<300) = ?

Q: Note that 5% of the population suffers from a particular disease. There is a diagnostic test to…

A:

Q: Based on a poll, among adults who regret getting tattoos, 16% say that they were to0 young when they…

A:

Q: 10. 44% of U.S. adults have very little confidence in newspapers. You randomly select 10 U.S.…

A: Given: n = 10 , p = 0.44 Let X be the number of U.S. adults who have very little confidence in…

Q: 1. Each sample of water has a 10% chance of containing a particular organic pollutant. Assume that…

A: Given: n=18 and p=0.1 Use binomial probability asPX=x=Cxnpx1-pn-x                      ;x≤n

Q: The Food Marketing Institute shows that 17% of households spend more than $100 per week on…

A: Given N=800 P=0.17

Q: Maggie is practicing her penalty kicks for her upcoming soccer game. During the practice, she…

A: Sample size, n = 10Probability , p = 65% = 0.65

Q: Meals are often served at a conference. At one conference: 50% went to breakfast 73% went to dinner…

A: According to the given information, we have P(breakfast) = 50%=0.50P(dinner) = 73% = 0.73P(breakfast…

Q: Student athlete Should be Paid 90 Should Not be Paid 10 Student nonathlete 90 a. If one student is…

A: Given:   Should be paid Should  not be paid Total Student athlete 90 10 100 Student non…

Q: After giving a test to a group of students, below is the summary of grades and gender. A В C Total…

A: A B C Total Male 12 20 19 51 Female 11 18 6 35 Total 23 38 25 86

Q: Solve the problem. Assume that mountain lions' weights are normally distributed with a mean of 62.6…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 62.6 ,…

Q: Based on a poll, among adults who regret getting tattoos, 12% say that they were too young when they…

A:

Q: Hospitals typically require backup generators to provide electricity in the event of a power outage.…

A: Given info: The emergency backup generators fail 41% of the times when they are needed.

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.