According to a survey, 26.8% of credit-card-holding families in a certain area hardly ever pay off the balance. Suppose a random sample of 20 credit-card-holding families is taken. Find the probability that at least 4 families hardly ever pay off the balance. The probability that at least 4 families hardly ever pay off the balance is (Round to four decimal places as needed.)

Q: A research institute reports that 73% of workers reported that they and/or their spouse had saved…

A: From the information, given thatLet X denotes the number of workers and their spouses have saved…

Q: In a recent study nationwide, it was found that 41% of people own dogs. If you pick two people at…

A: Given that  It was found that 41% of people own dogs. P(Dog) = 41% = 0.41   We know that…

Q: According to a​ survey, 22.9​% of​ credit-card-holding families in a certain area hardly ever pay…

A: given data  P(hardly ever pay off the balance) = p = 0.229 sample size (n) = 20 x = no. of families…

Q: Assume that when adults with smartphones are randomly​ selected, 57​% use them in meetings or…

A: Binomial Distribution :  The binomial probability is a type of discrete probability distribution…

Q: Assume that when adults with smartphones are randomly​ selected, 43​% use them in meetings or…

A: given data,p(use smart phone in meeting or classes) = 0.43p = 0.43q = 1 - p = 1 - 0.43    = 0.57n =…

Q: According to a​ survey, 20.8​% of​ credit-card-holding families in a certain area hardly ever pay…

A: Suppose a random variable x, defines that the number of families those hardly ever pay off the…

Q: A manufacturing machine has a 5% defect rate. If 9 items are chosen at random, what is the…

A: Given:  5% defect rate. If 9 items are chosen at random

Q: According to a study by a road safety interest group, the probability that speeding is a cause of a…

A: We have to find given probability.

Q: Assume that when human resource managers are randomly​ selected, ​41% say job applicants should…

A:

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: In a recent study nationwide, it was found that 51% of people lost their keys in the past year. If…

A:

Q: A recent study suggested that 70% of all eligible voters will vote in the next presidential…

A: Given Information: 70% of all eligible voters will vote in the next presidential election i.e., p =…

Q: study has shown that 65% of students at some time in their college career have skipped buying…

A: Given data, 65% of students at some time in their college career have skipped buying required…

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

A:

Q: Suppose that 46% of people own dogs. If you pick two people at random, what is the probability that…

A:

Q: n the toal US population, it is believed that only 12% of adults are lactose intolerant. if 200 US…

A: In this case, each considered US adult has the only options of being "lactose intolerant" (defined…

Q: A recent study by Allstate Insurance Co. finds that 78% of teenagers have used cell phones while…

A:

Q: Assume that when adults with smartphones are randomly selected, 41% use them in meetings or classes.…

A:

Q: Suppose that 20% of fruit flies possess a certain gene.  If we randomly select 20 fruit flies, find…

A: Here given that 20% of fruit flies possess the gene. In a sample of 20 we need to find the…

Q: According to a study, suppose the probability that a randomly selected child aged 8–12 spends more…

A: p=0.67n=5

Q: Assume that when adults with smartphones are randomly selected, 36% use them in meetings or classes.…

A: We have to find given probability..

Q: According to one poll, 54% of households in a certain region had no landline and only had cell phone…

A: The following information has been provided: The probability of success is p=0.54. The probability…

Q: what is the probability more than half of the sampled students are working full time?

A: Assume sixty percent of all NKU students work full time. If a random sample of 70 NKUstudents is…

Q: Assume that when adults with smartphones are randomly​ selected, 57​% use them in meetings or…

A: Given: Number of samples (n) = 20 Probability of success (p) = 0.57 Probabilty of failure (q) = 1-p…

Q: Assume that when adults with smartphones are randomly​ selected, 56​% use them in meetings or…

A: Let "X" be the adults who use their smartphones in meetings or classes.

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

A: Solution: Let X be the number of people believes that the college is no longer a good investment and…

Q: research institute reports that 71% of workers reported that they and/or their spouse had saved some…

A:

Q: Assume that when adults with smartphones are randomly​ selected, 35​% use them in meetings or…

A:

Q: Assume that when adults with smartphones are randomly​ selected, 52​% use them in meetings or…

A: Given n = 13, p = 0.52, x = 5 X be the random variable of adults using smartphones in meetings or…

Q: A standard pair of six-sided dice is rolled. What is the probability of rolling a sum less than 10?…

A: Solution: From the given information, a standard pair of six-sided dice is rolled.

Q: In a recent poll of voters, 20% were displeased with both candidates. If 3 people were picked at…

A: Let x is random variable where people like candidates, and n is total number of trial.Given:20%…