According to a 2018 survey by Bankrate.com, 20% of adults in the United States save nothing for retirement (CNBC website). Suppose that 15 adults in the United States are selected randomly. a.      What is the probability that all of the selected adults save nothing for retirement? b.      What is the probability that maximum five of the selected adults save nothing for retirement? c.      What is the probability that at least one of the selected adults saves nothing for retirement? d.      What is the expected number of adults who save nothing for retirement?

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

A: Given,n=5p=0.52Let X=no.of adults use their smartphonesin meetings or classes.X~Binomial(n=5 ,…

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, ​59% use them in meetings or…

A: The probability that exactly 3 of them use their smart phones in meetings or classes is obtained…

Q: Assume that when adults with smartphones are randomly​ selected, 59% use them in meetings or…

A: Given, p=0.59 and n=11 Let X be the random number which denotes the number of adults using…

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: Assume that when adults with smartphones are randomly selected, 45% use them in meetings or classes.…

A: According to the provided information, we have P(Adults with smartphones use them in meetings or…

Q: Assume that when adults with smartphones are randomly​ selected, 37​% use them in meetings or…

A: We have given that,  Probability (p) = 37% = 0.37 . n = 9 . And x=2 .

Q: Suppose that about 85% of graduating students attend their graduation. A group of 21 graduating…

A:

Q: Assume that when adults with smartphones are randomly​ selected, 53​% use them in meetings or…

A:

Q: Assume that when adults with smartphones are randomly​ selected, 47​% use them in meetings or…

A:

Q: Assume that when adults with smartphones are randomly​ selected, 42​% use them in meetings or…

A:

Q: In New York State's Quick Draw lottery, players choose between one and ten numbers that range from…

A: It is given that in a lottery game, players choose between 1 and 10 numbers that range from 1 to 80.…

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: use them in meetings or classes. If 10 adult smartphone users are randomly​ selected, find the…

A: 10 adult smartphone users are randomly selected and 49% use them; n=10 p=0.49

Q: Assume that when adults with smartphones are randomly​ selected, 45​% use them in meetings or…

A:

Q: Assume that when adults with smartphones are randomly​ selected, 51​% use them in meetings or…

A: Let X be the adults with smartphone X~B(n=10, p=0.51) P(X>=5)= ?

Q: Assume that when adults with smartphones are randomly​ selected, 59​% use them in meetings or…

A:

Q: Assume that when adults with smartphones are randomly​ selected, 62​% use them in meetings or…

A: Let p = probability of success, implies p = probability individual uses smartphone in meetings or…

Q: Assume that when adults with smartphones are randomly​ selected, 51​% use them in meetings or…

A:

Q: Assume that when adults with smartphones are randomly​ selected, 37​% use them in meetings or…

A:

Q: Assume that 15​% of people are​ left-handed. Suppose 12 people are selected at random. What's the…

A: Given : Probability of success,p = 0.15 Probability of failure,q=(1- 0.15 )= 0.85…

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

A:

Q: Assume that when adults with smartphones are randomly​ selected, 63​% use them in meetings or…

A:

Q: Assume that when adults with smartphones are randomly​ selected, 61​% use them in meetings or…

A: Given Assume that when adults with smartphones are randomly​ selected, 61​% use them in meetings or…

Q: Assume that when adults with smartphones are randomly​ selected, 46 ​% use them in meetings or…

A:

Q: Assume that when adults with smartphones are randomly​ selected, 55​% use them in meetings or…

A: Given that the adults with smartphones are randomly​ selected, 55​% use them in meetings or classes.…

Q: Assume that when adults with smartphones are randomly selected, 54% use them in meetings or classes.…

A: Given,n=6p=0.54q=1-p=1-0.54=0.46X=No.of adults use their smartphones in meetingsor…

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

A: Consider X be a random variable which follows binomial distribution indicates the smartphone users…

Q: Assume that when adults with smartphones are randomly​ selected, 54​% use them in meetings or…

A: p(adults with smartphones )=0.54 total outcomes :n=7x= no. of adults with smartphones we have to…

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

A:

Q: assume that when adults with smartphones are randomly selected, 44% use them in meetings or classes.…

A:

Q: Assume that when adults with smartphones are randomly​ selected, 58 ​% use them in meetings or…

A: Given that adults with smartphones are randomly​ selected, 58 ​% use them in meetings or classes.…

Q: Assume that when adults with smartphones are randomly selected, 54% use them in meetings or classes.…

A: Given: To find the probability that at least five people use thier smartphones in meeting and…

Q: Assume that when adults with smartphones are randomly selected, 54% use them in meetings or classes.…

A: Denote X as the adults who use their smartphones in meetings or classes, which following binomial…

Q: Assume that when adults with smartphones are randomly​ selected, 53​% use them in meetings or…

A: given data P(use smartphone in meeting or class) = p = 0.53sample size (n) = 5x = no. of adults use…

Q: Assume that when adults with smartphones are randomly​ selected, 44​% use them in meetings or…

A: Suppose a random variable X, defines that the number of adults, who use their smartphones in…

Q: Assume that when adults with smartphones are randomly​ selected, 49​% use them in meetings or…

A:

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

A: Solution given: Sample size (n) = 5 p (adult use smartphones in meeting or classes) = 0.52 p (adult…

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.