It is known that 15% of the seniors in a large high school will enter military service upon graduation. If a group of 20 seniors is randomly selected, what is the probability of observing exactly two who will enter the military service?

It is known that 15% of the seniors in a large high school will enter military service upon graduation. If a group of 20 seniors is randomly selected, what is the probability of observing exactly two who will enter the military service?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Related questions

Q: Suppose that you sampled 2 CEOs with replacement instead. How many different samples are possible,…

A: Sampling is a process which is used in statistical analysis. In sampling a predetermined number of…

Q: It is known that a certain basketball player will successfully make a free throw 90.71% of the time.…

A: From the given information,P = 90.71%= 0.9071So, q = 1- P = 1-0.9071 = 0.0929n = 11we have to find…

Q: According to a recent study, 14% of U.S. drivers are uninsured. A random sample of seven drivers was…

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: In a recent year, 13% of businesses have eliminated jobs. If 6 businesses are randomly sampled, what…

A: Let us denote X=the number of businesses that have eliminated jobs. n=sample size=6 p=probability of…

Q: If administrators are selected randomly from the faculty, what is the approximate probability that…

A: Given that, No. of teachers = 2000 P(men) = p = 50% = 0.50 P(women) = q = 50% = 0.50 No. of…

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

A: The binomial probability distribution is, PX=x=nxpx1-pn-x In the formula, n denotes the number of…

Q: In a sample of 1000 US adults 106 think that most celebrities are great role models. Two US adults…

A: Given that, in a sample of 1000 US adults, 106 think that most celebrities are great role models. We…

Q: 1. Suppose that 31% of adults have at least one tattoo. If you sample 90 random adults, what is the…

A: From the given information the probability that adult have tattoos is .31. Samples are taken random…

Q: A recent study found that 40% of all people over age of 62 is selected. If a random sample of 5…

Q: According to a newspaper, 40% of bicycles stolen in a certain country are recovered. Find the…

A: Solution: We are given that 40% of bicycles stolen in a certain country are recovered. Let x be the…

Q: A survey showed that 73% of adults need correction ( eyeglasses, contacts, surgery,etc.) for their…

A: Let us denote X= the number of persons who need correction for their eyesight. n= number of trials =…

Q: Suppose the first generation Apple iPad has 5% chance of being defective. What is the probability…

A: From the provided information, Apple iPad has 5% chance of being defective that is p = 0.05 Sample…

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: A poll is given, showing 70% are in favor of a new building project. If 8 people are chosen at…

A: According to the given information, we have Probability, p = 70% = 0.70 Sample size, n = 8

Q: A survey showed that 80% of adults need correction (eyeglasses, contacts, surgery, etc.) for their…

A: Probability of adults need correction (eyeglasses, contacts, surgery, etc.) for their…

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: A survey showed that 82% of adults need correction (eyeglasses, contacts, surgery, etc.) for their…

A: 82% of adults need correction (eyeglasses, contacts, surgery, etc.) for their eyesight. 19 adults…

Q: A poll is given, showing 40% are in favor of a new building project. If 9 people are chosen at…

Q: A study shows that 15% of adult males don’t wash their hands in a public restroom. We take a random…

Q: According to some estimates, approximately 34.3% of the American population has A+ blood. Suppose…

A: We have to find given probabaility.

Q: The national weather service states that 40% of hurricanes that make landfall on the east coast of…

A: we have to find probability that in a sample of 19 hurricanes that make landfall on the east coast…

Q: In a study of 44 patients at a rural hospital, there were 9 females in the ICU, 6 females in the…

Q: A poll is given, showing 55% are in favor of a new building project. If 5 people are chosen at…

A: Given Information: Proportion p=0.55 Sample size n=5 The objective is to find the probability that…

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

A: Given Information: 55% of adults use their smartphones in meetings or classes. i.e., p=0.55 If n=11…

Q: Assume that when adults with smartphones are randomly selected, 39% use them in meetings or…

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: A study of consumer smoking habits includes 200 people in the 18-22 age bracket (40 of whom smoke),…

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

A: The binomial distribution function is: PX=x=Cxnpx1-pn-xwhere,n=number of trials,x=number of success,…

Q: find the probability that exactly 22 of them use their smartphones in meetings or classes.

A: It is given that the number of observations are independent with probability of success p = 42% =…

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

A: Given that, Probability, p = 42% = 0.42 Sample size = 20

Q: A poll is given, showing 35% are in favor of a new building project. If 8 people are chosen at…

Q: According to the Center for Disease Control (CDC), the percentage of boys who are diagnosed with…

Q: A survey showed that 81% of adults need correction (eyeglasses, contacts, surgery, etc.) for their…

A: Obtain the probability that no more than 1 of them needs correction for their eyesight. The…

Q: According to data from an LG Smartphone survey, 54% of adults with smartphones use them during…

A: Obtain the probability that exactly 30 have used their smart phones during a meeting or in class.…

Question

Video Video

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Introduce the given information

VIEW

Step 2: Calculate the probability

VIEW

Solution

VIEW

Step by step

Solved in 3 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Similar questions

The Association reports that among individuals in the 48 to 55 age, 45% drinkcoffee. If 200 people in that age are randomly selected, find the probability that thenumber of coffee drinkers is between 95 and 102 inclusively
According to a safety engineer, barely 40% of all workers wear safety helmets when eating lunch at work. Assuming his allegation is correct, calculate the probability that four of six workers, chosen at random, will be wearing their helmets while eating lunch at work.
A study determined that 18% of a population use a certain brand of laundry detergent. what is the probability that more than 2 shoppers selected at random from 10 shoppers use that brand of detergent?
In a survey of Canadian nurses who worked more than 45 hours per week, it was found that 321 nurses were under 35 years of age and 403 nurses were 35 to 55 years old. If one nurse from this survey is selected at random, what is the probability that she or he is under 35 years old?
Assume that when adults with smartphones are randomly selected, 56% use them in meetings or classes. If 25 adult smartphone users are randomly selected, find the probability that exactly 20 of them use their smartphones in meetings or classes.
According to data on the sale of Vehicles in Barbados, it was calculated that men purchase 75% of vehicles in Babados. If 30 vehicle owners are selected randomly, find the probability that exactly 13 are men.
According to the Center for Disease Control (CDC), the percentage of boys who are diagnosed with autism by the age of 8 is 2.7%. If 150 boys under the age of 8 are randomly selected, find the probability that the average of them being diagnosed with autism is more than 2.5%.
Assume that when adults with smartphones are randomly selected, 35% use them in meetings or classes. If 9 adult smartphone users are randomly selected, find the probability that exactly 4 of them use their smartphones in meetings or classes.
In a survey of US adults with a sample size of 2000, there are 1229 people who said Ronald Reagan was the best president. Two US adults are selected at random from this sample without replacement. Find the probability that both adults say that Ronald Reagan was the best president.
A Supervisor of a pharmacy found that 30% of the workers receive their spending money from part – time jobs. If five workers are selected at random, find the probability that at least 3 of them will have part – time jobs?
Eight of the 50 digital video recorders (DVRs) in an inventory are known to be defective. What is the probability that a randomly selected item is defective?
Assume that when adults with smartphones are randomly selected, 52% use them in meetings or classes. If 13 adult smartphone users are randomly selected, find the probability that fewer than 5 of them use their smartphones in meetings or classes.