Pareto Charts. In Exercises 11 and 12 construct the Pareto chart. Journal Retractions In a study of retractions in biomedical journals, 436 were due to error, 201 were due to plagiarism, 888 were due to fraud, 291 were duplications of publications, and 287 had other causes (based on data from “Misconduct Accounts for the Majority of Retracted Scientific Publications,” by Fang, Steen, Casadevall, Proceedings of the National Academy of Sciences of the United States of America, Vol. 110, No. 3). Among such retractions, does misconduct (fraud, duplication, plagiarism) appear to be a major factor?

Q: Hamilton County Judges Reporter Kristen DelGuzzi of The Cincinnati Enquirer is writing a piece about…

A: The question is about conditional probability Given : Total no. of court cases disposed = 182908 No.…

Q: Researchers wondered if there was a difference between males and females in regard to some common…

A: Given Data n1 = 522 x1 = 202 n2 = 505 x2 = 171

Q: hypothesis H0:p=0.65 where p is the proportion of all adults in the city who meet or exceed the…

A: Given that  n=400 , X=245 , p0=65%=0.65 p=X/n

Q: In a survey conducted by a website, employers were asked if they had ever sent an employee home…

A: From given data we have : n=2769 x=978 The claim is more than one-third of employers have sent and…

Q: es/CBS News poll sampled 523 adults who were planning a vacation during the next six months and…

A: We have 2015 as Population 1 and 2005 as Population 2. Then p1=Population proportion of Population…

Q: A website sells used golf clubs.  For a sample of 50 golf clubs to feature the following information…

A: a): categorical data is a type of data that can be stored into groups or categories with the aid of…

Q: Report the test statistic. Round your answer to TWO decimal places.  You may use the observed…

A: It is given that  Favourable cases, x = 777 Sample size, n = 2101 Population proportion, p = 34.5% =…

Q: College Degree Recipients A survey of 800  recent degree recipients found that 150  received…

A: The given data is, Category Oi Associate degree 150 bachelor 458 first professional 20…

Q: (1) The number fired because of inability to get along with others is 3. (2) The number fired…

A: The objective of the question is to find the probability of a certain number of employees being…

Q: An investigator analyzed the leading digits from 784 checks issued by seven suspect companies. The…

A: There is only one categorical variable which is leading digit. It has 9 categories. We have to do…

Q: Would it be unusual if 89 of the 250 adults surveyed believe that the overall state of moral values…

A: It is given that Prob. of success, p = 41% = 0.41Sample size, n = 250

Q: Pacific (APAC) Fraud Survey. Interviews were conducted with a sample 1,508 employees of large APAC…

A: a. In the 2015 survey:Calculated test statistic Zc = -3.81, leading to a p-value of 0.00007.As the…

Q: Twittering away The Pew Internet and American Life Project asked a random sample of 2253 U.S.…

A: Given Information: Sample size n=2253 Sample proportion p^=0.19

Q: The Center for Entrepreneurship is seeking to offer programs to aid students who are interested in…

A: Given data is appropriate for testing of hypothesis to test t-test for difference of means, because…

Q: Withholding Treatment. Several years ago, a poll by Gallup asked 1528 adults the following question:…

A: The claim is to test whether there is an association exists between opinion and education. If the…

Q: t has been reported that 5% of U.S. households don’t own a smart phone, 35% own one smart phone, 40%…

A: The distribution of the smartphones in 100 sampled households is given as:No. of smartphonesNo. of…

Q: Determine whether the following statement makes sense (or  is clearly true) or do not make sense (…

A: As per the questionNo of males = 800No of females = 200It is not given out of 800 males and out of…

Q: TIME WASTED AT WORK? An employment survey at a local small business was conducted to see how much…

A: Given that: Sample of n=10 employees: 108,112,117,130,111,131,113, 113, 105, 128 Claim: less than…

Q: hoyed by people who repeatedly check their mobile phones while having an in-person conversation?"…

A:

Q: If a study determines the difference in average salary for subpopulations of medical engineers and…

A: It is given that difference in average salary for subpopulations of medical engineers and civil…

Q: There are 15,958,866 adults in a region. If a polling organization randomly selects 1235 adults…

A: In this case the sample is selected w/o replacement. Population size is 15,958,866 adults Sample…

Q: The research group asked the following question of individuals who earned in excess of​ $100,000 per…

A: From the provided information, Confidence level = 95% n1=1205x1=712n2=1310x2=700

Q: only 20% of registered voters voted in the last election. will voter participation increase for the…

A:

Q: Which source of bias is most relevant to the following situation: A survey ask the following:…

A: To identify the most relevant source of bias in the given situation. A survey ask the following:…

Q: 6. Can professional astrologers reliably determine when a person was born based on their…

A: a) The null hypothesis is, Given that, x = 35, n =116 (a)   H0: The astrologers can match birth…

Q: 00 students are enrolled in a first year statistics course. Two options are offered: the students…

A: Explanatory variables are nothing, but independent variables and they effect changes in a dependent…

Q: 3. Today, in a random sample of 30 people, Trump received an approval rating of 30% world- wide. On…

A:

Q: 200 students are enrolled in a first year statistics course. Two options are offered: the students…

A: Randomized Block design: Randomized block design is used to study the effectiveness of the new…

Q: 200 students are enrolled in a first year statistics course. Two options are offered: the students…

A: 200 students are enrolled in a first year statistics course. Two options are offered: the students…

Q: College Degree Recipients A survey of 800 recent degree recipients found that 158 received associate…

A: We have to perform Chi-square goodness of fit test.  Hypothesis : H1 : At least one of the…

Q: Last school year, the student body of a local university consisted of 35% freshmen, 24% sophomores,…

A: Formula : Degree of freedom : df = k-1

Q: he average asking rent for 10 markets, and the corresponding monthly mortgage on the median priced…

A: Given data:   Rent ($) Mortgage ($) City 1 840 539 City 2 1062 1002 City 3 823 626 City 4…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: Sample Size Sample number of events Sample proportion Sample 1 n₁ = 314 x₁ =62 p₁ = x₁/n₁…

Q: The average asking rent for 10 markets, and the corresponding monthly mortgage on the median priced…

A: The given data is as follows, The random variable X is the rent The random variable Y is the…

Q: We want to investigate whether there exists gender bias on traffic stops by the police here in…

A: Given that, For females: Sample size, n1= 24314 and x1= 438 For males: Sample size, n2= 34095 and…

Q: According to the National Institute on Alcohol Abuse and Alcoholism (NIAAA), and the National…

A: As per honor code, we will only answer first three questions: Given information: P=0.37n=364x=136 A)…

Bar Graphs

A bar graph is a chart or graphical representation of data. A bar chart, also known as a bar graph, is a graph or chart that displays categorical data using rectangular bars with heights or lengths equal to the values they represent. Typically, bar graphs show categorical and numerical variables grouped in class intervals. A bar graph is useful for comparing and analyzing a set of data.