Some employers use lie detector tests to screen job applicants. Lie detector tests are not completely reliable. Suppose that a polygraph can detect 63% of lies, but incorrectly identifies 11% of true statements as lies. A company gives its job applicants a polygraph test, asking "Did you tell the truth on your job application?". All the applicants answer "Yes", but the test identifies some of those answers as lies, thereby causing the person to fail the test. Suppose that 90% of the job applicants tell the truth during the polygraph test. What is the probability that a person who fails the test was actually telling the truth? O A. 0.001 O B. 0.389 Oc. 0.611 O D. 0.099 O E. 0.567

Q: A box contains 10 red, 6 blue, and 4 green marbles.  What is the probabilty to withdraw a marble…

A: According to the given information, we have There are 20 marbles in a box. Number of red marbles =…

Q: A company is considering using a polygraph to screen the “honesty” of their applicants.  When asked,…

A: Suppose that D is an event that an applicant is dishonest and PO is another event that test is…

Q: A local TV station conducts an “Instant Poll” to predict the winner in the upcoming mayoral…

A: Given data: Prediction made by the station: Joseph Serra would win the election with 52% of the…

Q: the claim of health officer true

A: Given; n=100, x=70 , P0=60% and α=0.01 To test: H0: The researcher concludes completed polio vaccine…

Q: A grocery store was introducing a new product by setting up a display for people to try the product.…

A:

Q: Are Republicans just as likely as Dem American flag in front of their reside July? 459 of the 687…

A: For republicans : n1  = 687 x1 = 459 sample proportion (p1^) = x1/n1  = 459/687  = 0.6681 For…

Q: What is the probabilty of tossing a coin and getting heads, then drawing a diamond from a standard…

A:

Q: A class has ten girls and three boys. If the teacher randomly picks ten students,what is the…

A:

Q: The State Superintendent of Schools consistently states that the average salary of all substitute…

A: Given Information: Sample size (n) = 8 The state superintendent of schools states that the average…

Q: Draw and fill out a Venn diagram to represent the results of the survey and fill in each section.

A:

Q: A student wants to simulate 23 birthdays, but she does not have a calculator or software program…

A: Correct answer is  (A)

Q: A greenhouse owner wants to test the effectiveness of a new fertilizer on African violets. She has…

A: Solution Total number of plants = 60 No. of selection = 10 The sampling is a single random sampling.…

Q: In a school of 100 students, 70 students play either football or cricket with 40 students that play…

A:

Q: When dragons on planet Pern lay eggs, the eggs are either green or yellow. The biologists have…

A: Given: X~ Bin (n, p) Where n = 56, p = 0.28

Q: The SAT used to penalize wrong answers by subtracting 1/4 a point from each incorrect answer. If…

A:

Q: You suspect that a coin is not fair, Which statement would provide the best evidence that the coin…

A: Given four statements about flipping a coin.

Q: A survey of athletes at a high school is conducted, and the following facts are discovered: 28% of…

A: According to the provided information,  Out of 100, 28 athletes  play football     71 athletes  play…

Q: The Gallup organization surveyed 1100 adult Americans on May 6-9, 2002, and conducted an independent…

A: The conditions for two proportion is to be satisfied is: The two samples are random samples and…

Q: A local talk radio station conducts a poll to determine if its listeners favor or oppose the…

A: Given 1)  What does an experiment have that an observation does not have? A means to gather data…

Q: In a local election, 56.0% of those aged under 40 and 48.8% of those aged over 40 vote in favor of a…

A: Independent Events:Two events are said to be independent if occurrence of one event does not affect…

Q: Are freshmen psychology majors just as likely to change their major before they graduate compared to…

A: Given:x1=329, n1=651x2=398, n2=760 Then,p^1=x1n1=329651=0.5054p^2=x2n2=398760=0.5237…

Q: The SAT used to penalize wrong answers by subtracting 1/4 a point from each incorrect answer. If…

A: For each question the probability of getting it correct is= 15, because there are 5 answer choices.…

Q: A TV news reporter says that a proposed constitutional amendment is likely to win approval in the…

A: Part b: Given: Sample size, n = 425                        Sample proportion, p^ = 0.52…

Q: Suppose a multiple choice test contains 40 questions. If each question has 5 answer choices only one…

A:

Q: A student wishes to see if at her school the proportion of underclassmen who do not have have a job…

A: Given,n1=257 , x1=55n2=288  ,  x2=45p^1=x1n1p^1=55257=0.21401p^2=x2n2p^2=45288=0.15625pooled…

Q: if there are 15 microwaves and 5 are defective, what is the probablity of exactly 2 being good if…

A: Given: There are 15 microwaves out of which 5 are defective. Objective of the question is to find…

Q: if four blue marbles and eight non blue marbels make a probabilyty of 0.33 how many non blue…

A: Given information 4 Blue marbles 8 Non-Blue marbles Probability of getting a blue marbles p = 0.33

Q: At a store, customers are randomly selected to participate In a survey. On Friday, there were 500…

A: Given: At a store customers are randomly selected to participate in a survey. On Friday, there were…

Q: State the null and alternative hypothesis, and identify which represents the claim. d) According to…

A: The objective is to state the null and alternative hypothesis, and identify which represents the…

Q: It has been reported by the professors in many Computer Science departments that the drop-out rate…

A: Population is the set of all objects of interest. Sample is s subset of the population. It is not…

Q: Dorinda is in second grade. She asks 6 of her classmates if they like to wear friendship bracelets.…

A: Random Sample should be taken in a way that they must be true representative of population.

Q: ppose a multiple choice test contains 40 questions. If each question has 5 answer choices only one…

A:

Q: Derek created a website where users could randomly generate a "strong password." He claims that 25%…

A: Solution

Q: Lorena took a survey of the students in her honors science class to determine how many are going to…

A: Lorena took a survey of the students in her honors science class to determine how many are going to…

Q: adults would erase all of their personal information online if they could. A software firm survey of…

A: Null hypothesis H0 : a minority of adults would erase their personal information online H0: P= P0

Q: *Null- reenlistment bonuses do not determine whether a sailor reenlists *Alternative- reenlistment…

A: Null- reenlistment bonuses do not determine whether a sailor reenlists *Alternative- reenlistment…

Q: Suppose an exam consists of multiple-choice questions, with each question having 5 options. Exactly…

A: Given information: PCorrect answer=15PIncorrect answer=1-PCorrect answer=1-15=45 Score awarded for…

Q: Determine whether the alternate hypothesis is left-tailed, right-tailed, or twa-tailed.

A: We know that,  H0 :μ =24  versus H1:μ ≠24 We have to check the above alternative hypothesis is,…

Q: na has conducted a hypothesis test for H0:μ=72 vs. Ha:μ≠72, found a p-value of 0.07, and decided not…

A: In hypothesis testing, the null hypothesis can be defined as the hypothesis of no difference or…

Q: 1. Suppose a multiple choice test contains 30 questions. If each question has 5 answer choices only…

A: An experiment with two possible outcomes follows the binomial distribution.The binomial distribution…

Q: In the past, 74% of the tourists who visited Chattanooga went to see Rock City. The management of…

A:

Q: A certain company offers in-home cral HIV testing. According to their website, out of 4,998 persons…

A: The sensitivity of the test is calculated as the number of diseased that are correctly classified,…

Q: A random sample of 600 voters in Centreville indicated that 90 of them believed their congressional…

A: In the question it is given that A random sample of 600 voters in Centreville indicated that 90 of…

Q: A statistics instructor believes that more than 20% of Evergreen Valley College (EVC) students…

A: Given: n= 84 ,x= 11.0 p= 0.20 Need to find Alternative hypothesis condition??

Q: Suppose that a survey was carried out in New York, and each respondent was faced with the following…

A: The probability that a digit is either even or odd is equally likely with the probability 0.5,…

Q: A grocery store was introducing a new product by setting up a display for people to try the product.…

A: As the survey is conducted on a particular time it may be possible that people were not in mood to…

Q: Suppose a multiple choice test contains 30 questions. If each question has 5 answer choices only one…

A: An experiment with two possible outcomes follows the binomial distribution.The binomial distribution…

Q: In a recent health insurance survey, employees at a large corporation were asked, "Have you been a…

A: Given: Number of employees who had an injury = 492 Number of employees who had an illness = 779…

Q: Participants in an experiment are asked to flip a fair coin and report the outcome. If they report…

A: There is an incentive for the participant to report Heads as the outcome of the tossing a fair coin…

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.