4.31 A multiple-choice question on a test has five answers. If Dianne chooses one answer based on "pure guess," what is the probability that her answer is a. correct? b. wrong? Do these two probabilities add up to 1.0? If yes, why?

Q: d) A report indicates that 75% of all Parliament members agree with the proposal to lower the voting…

A: The given probability of all parliament members agree with the proposal is 0.75. It means that the…

Q: The police reported that 78% of the drivers stopped on suspicion of drunk driving are given a breath…

A: a)

Q: Three out of four people think the most advertising seeks to persuade people to buy things they dont…

A:

Q: It was estimated that 30% of all seniors on a campus were seriously concerned about employment…

A: Let us denote: E=seriously concerned about employment prospects G= seriously concerned about grades,…

Q: When packaging a product, a manufacturer finds that one packet in twenty is underweight. Determine…

A:

Q: n a genetics experiment on​ peas, one sample of offspring contained 390 green peas and 141 yellow…

A:

Q: An article states that false-positives in polygraph tests (tests in which an individual fails even…

A: Let X be a random variable such that X: Number of individuals who pass the test. (i) We know,…

Q: Given the following two-way classification table for a survey of data regarding the number of…

A:

Q: Part 1 of 4 (a) What Is the probablity that six or more of them used their phones for guldance on…

A: Given : Probability of success,p = 0.57 Number of trials,n = 14

Q: In a Gallop Poll, 35% of 30 - 49 states that they believe in ghosts. Find the probability that out…

A: (a) The probability that college students do not believe in ghosts is, P(do not believe in ghosts)…

Q: 1. The probabilities that a researcher surveyed 1, 2, 3 and 4 college graduates in the households in…

A: Given that the probability of a researcher survey 1 , 2 , 3 , 4  college graduates in the household…

Q: 2.4 Complete the below statement. If the covariance of two random variables is zero, the variables…

A: For the given statement Fill in the blanks

Q: 17. What is the probability that a randomly selected person would be a Female ana had a Negative…

A: Provided information is, a market research study is being conducted to determine if a product…

Q: 1) The mean number of births per day is........? 2)  The probability​ that, in a​ day, there are 15…

A: Since , the number of atoms decayed during 365 days is 29522/365=80.8822 Let , X be the number of…

Q: It is estimated that, during the past year, 26% of all adults visited a therapist and 45% of all…

A:

Q: According to a recent Gallup Poll, 5% of Americans believe that healthcare is the most important…

A: Givenpopulation proportion(p)=0.05sample size(n)=733Mean(μp^)=p=0.05standard…

Q: 3.28 It is estimated that 4000 of the 10,000 voting residents of a town are against a new sales tax.…

A:

Q: According to the Experian Automotive, 35% of all car-owning households have three or more cars.Find…

A:

Q: Three out of four people think most advertising seeks to persuade people to buy things that they…

A: 3 out of 4 people think most advertising seeks to persuade people to buy things that theydon’t need…

Q: A medical study testing a new drug for treating cooties gave the drug to one group and a placebo to…

A:

Q: A particular telephone number is used to receive both voice calls and fax messages. Suppose that 20%…

A: A particular telephone number is used to receive both voice calls and fax messages. Suppose that 20%…

Q: What is the probability of obtaining x= 50 or more individuals with the characteristic? That is,…

A: Sample size is n = 200 Population proportion is p = 0.2

Q: From a prior national study, we are able to infer that the probability of a high school student…

A: Probability of a senior from Tom River  going to college (p) = 0.6 (since all of their parents have…

Q: 1. A sample of 4 different calculators is randomly selected from a group containing 20 that are…

A: Q1: The number of defective calculators is 20 and the number of non-defective calculators is 10.

Q: a proportion of 0.4 are not satisfied with the service offered by the store. In a random sample of…

A: According to central limit theorem if the sample size n and population proportion p satisfies np≥10…

Q: Given the following two-way classification table for a survey of data regarding the number of…

A: Required probability is P(Did Not Use Textbook)

Q: Based on a​ poll, 67​% of Internet users are more careful about personal information when using a…

A: Given p = 0.67 and n =4 Let X be the number of Internet users who are more careful about personal…

Q: Q2. An association of coffee producers has estimated that 50% of adult workers drink coffee at least…

A: Binomial distribution allows us to compute the probability of observing a specified number of events…

Q: From their individual interview, Marcela claims that no more than 5% of the garments she sewed did…

A: Given Information: The claim of Marcela: Not more than 5% of the garments she sewed did not pass the…

Q: f jellybeans are not associated with acne and you adopt an alpha of 5%: What is the probability of…

A: Given that  If jellybeans are not associated with acne and you adopt an alpha of 5% Level of…

Q: An average student is known to have a chance of 50% in answering a TRUE or FALSE question correctly.…

A: Obtain the probability that an average student will have at least 1 correct answer.   The…

Q: In 1983, Daniel Kahneman and Amos Tversky posed the now famous "Linda" problem, asking participants…

A: We have to find test statistic for one sample proportion test. Formula : z = p^ - pp(1-p)n Where ,…

Q: 10. A movie theatre estimated that when a random ticket holder is VIP, there is a 1/7 chance that…

A: Given information: PPerson will be over 30 years old=17PWomen=25

Q: In a large IT company, 70% of programmers are male while 25% know Python. Eighteen percent of the…

A: Given that P(male) = 0.70 P(know python) = 0.25 P(male and know python) = 0.18

Q: n a smaller animal shelter, 12 cats and 5 dogs are being accommodated. Table below shows age group…

A: From the given data: p^1=45=0.8p^2=712=0.5833   Null and Alternate Hypothesis: H0: p^1=p^2HA:p^1≠p^2

Q: 16. What is the probability that a randomly selected male would have a Positive Reaction to this…

A: Given,   positive reaction neutral reaction negative reaction Male 310 200 150 Female 450 550…

Q: The probabilities that a printer produces 0,1,2, and 3 misprints are 42%, 28%, 18%, and 12%…

A:

Q: about 7% of the population of a large country is nervous around strangers. If two people are…

A: The probability that both are nervous around strangers is,

Q: 7.) The Pew Internet and American Life Project reported in 2004 that 55% of current music…

A: Note: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts…

Q: The Department of Labor and Employment (DOLE) found that 83% of Filipinos think that having a…

A: Let the R.V X denotes the number of Filipinos think that having a college education is important to…

Q: A group of students at a high school took a standardized test. The number of students who passed or…

A: From the given information we find the solution.

Q: A set of final examination grades in an introductory statistics course is normally dis- ributed with…

A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any…

Q: Given that 58% of all gold dealers believe next year will be a good one to speculate in South…

A:

Q: According to a recent Gallup Poll, 5% of Americans believe that healthcare is the most important…

A: We have given that  Sample size n=733, p=5%=0.05

Q: 11. Survey on Concern for Criminals - In a survey, 3 of 4 students said the courts show "too much…

A: Given: Sample size, n=7 Probability of students said that, courts show "too much concern" for…

Q: Smoking is known to be hazardous to one's health. Suppose that in a study conducted on the…

A:

Q: Calculate the following probabilities: a-) The probability of being the 8. person selected from a…

A: Solution: a). Total number of person in a group = 14 Probability of being the 8 person selected  =…

Q: 2) A CNN/USA Today/Gallup poll in April 2005 reported that 75% of adult Americans were satisfied…

A: 2) Given information: It was stated that in April 2005CNN/USA Today Gallup poll reported the…

Q: 1.  Answer the following questions based on rolling a single six-sided die.  a)    If you roll a…

A: A single six sided die is rolled. a) Sample space of possible outcomes is S = {1,2,3,4,5,6} with…