Statistics And Analysis Of Scientific Data 2nd Edition Massimiliano Bonamente - Solutions

Unlock the full potential of "Statistics And Analysis Of Scientific Data 2nd Edition" by accessing our comprehensive online solutions. Our answers key and solution manual provide detailed answers and solutions in PDF format, guiding you through solved problems with ease. Explore our extensive test bank, featuring questions and answers tailored to each chapter, and benefit from our step-by-step answers designed for thorough understanding. Whether you're seeking an instructor manual or textbook insights, our resources are available for free download, ensuring you have the chapter solutions you need to excel.

If a correlation between two nominal variables is analyzed the phi coefficient or the contingency coefficient should be used.
6.1 Which correlation coefficient should be used for which scales?
6.2 Why are theoretical considerations necessary before calculating a correlation between variables?
6.3 Why does a correlation coefficient say nothing about causality?
6.4 Consider the following three scatterplots, which were discussed by Anscombe nearly fifty years ago in the year 1973. In which of the cases can the Bravais–Pearson correlation coefficient be calculated without problems? Why?
6.5 Draw and calculate by hand the scatterplot and the correlation coefficient for the variable growth and marketing for the first eight companies of our data set data_growth.xlsx and interpret the result.
6.6 Use Excel to draw the scatterplot and to calculate the correlation coefficient of Bravais–Pearson for the variables growth and marketing, growth and innovation, growth and experience, and growth and age and interpret the result.The data set is data_growth.xlsx
6.7 Calculate by hand the rank correlation coefficient of Spearman for the variables growth rate and self-assessment and interpret the result, use the first ten companies in the data set data_growth.xlsx.
6.8 Use Excel to calculate the rank correlation coefficient of Spearman for the variables growth and self-assessment and interpret the result. The data set is data_growth.xlsx.
6.9 Calculate the phi coefficient for the variables sex and sector and interpret the result, data set data_growth.xlsx.
6.10 For our data set data_growth.xlsx, calculate the contingency coefficient for the variables sex and motive and interpret the result.
6.11 We are interested in the relationship between CO2 emissions per capita and the gross domestic product per capita in the European Union. In the database of Eurostat(https://ec.europa.eu/eurostat/de/home) we find the following information:Calculate and interpret the correlation coefficient.
6.12 We are interested in whether there is a correlation between three stocks. We once again go to the Internet, visit a financial platform (this time perhaps https://www.boerse-online.de/) and retrieve historical values for VW, Daimler and SAP. We get the following values:
Focus Problem: Fireflies Suppose you are conducting a study to compare firefly populations exposed to normal daylight/darkness conditions with firefly populations exposed to continuous light (24 hours a day). You set up two firefly colonies in a laboratory environment. The two colonies are
Census: Web Site Census and You, a publication of the Census Bureau, indicates that “Wherever your Web journey ends up, it should start at the Census Bureau’s site.” Find the Census Bureau’s web site. What is the population change over the last decade in your local area? How does it compare
Student Life: Data Collection Project Make a statistical profile of your own statistics class. Items of interest might be(a) Height, age, gender, pulse, number of siblings, marital status(b) Number of college credit hours completed (as of beginning of term); grade point average(c) Major; number of
General: Experiment How would you use a completely randomized experiment in each of the following settings? Is a placebo being used or not? Be specific and give details.(a) A charitable nonprofit organization wants to test two methods of fundraising. From a list of 1000 past donors, half will be
General: Gathering Data Which technique for gathering data (observational study or experiment) do you think was used in the following studies? Explain.(a) The U.S. Census Bureau tracks population age. In 1900, the percentage of the population that was 19 years old or younger was 44.4%. In 1930, the
General: Type of Sampling Categorize the type of sampling (simple random, stratified, systematic, cluster, or convenience) used in each of the following situations.(a) To conduct a preelection opinion poll on a proposed amendment to the state constitution, a random sample of 10 cell phone prefixes
Simulation: Identity Theft The U.S. Department of Justice examined all reported cases of identity theft for U.S. residents aged 16 or older. Their data show that of all the reported incidents of identity theft in a recent year, 40% involved existing credit card accounts. You are to design a
Radio Talk Show: Sample Bias A radio talk show host asked listeners to respond either yes or no to the question, “Is the candidate who spends the most on a campaign the most likely to win?” Fifteen people called in and nine said yes. What is the implied population? What is the variable? Can you
Statistical Literacy You are conducting a study of students doing work-study jobs on your campus.Among the questions on the survey instrument are:A. How many hours are you scheduled to work each week? Answer to the nearest hour.B. How applicable is this work experience to your future employment
Critical Thinking Alisha wants to do a statistical study to determine how long it takes people to complete a Sudoku puzzle (see Problem 1 for a description of the puzzle). Alisha’s plan is as follows:Download 10 different puzzles from the Internet.Find 10 friends willing to participate.Ask each
Critical Thinking Sudoku is a puzzle consisting of squares arranged in 9 rows and 9 columns. The 81 squares are further divided into nine 3 3 3 square boxes. The object is to fill in the squares with numerals 1 through 9 so that each column, row, and box contains all nine numbers. However, there is
Surveys: Manipulation The New York Times did a special report on polling that was carried in papers across the nation. The article pointed out how readily the results of a survey can be manipulated. Some features that can influence the results of a poll include the following: the number of possible
General: Completely Randomized Experiment How would you use a completely randomized experiment in each of the following settings? Is a placebo being used or not? Be specific and give details.(a) A veterinarian wants to test a strain of antibiotic on calves to determine their resistance to common
General: Gathering Data Which technique for gathering data (sampling, experiment, simulation, or census) do you think was used in the following studies?(a) An analysis of a sample of 17,000 hospitalized COVID-19 patients shows that 97% of them are unvaccinated.(b) The effects of wind shear on
Ecology: Gathering Data Which technique for gathering data (observational study or experiment) do you think was used in the following studies?(a) The Colorado Division of Wildlife netted and released 774 fish at Quincy Reservoir. There were 219 perch, 315 blue gill, 83 pike, and 157 rainbow
Interpretation Suppose you are looking at the 2006 results of how the Echo generation classified specified items as either luxuries or necessities. Do you expect the results to reflect how the Echo generation would classify items in 2020? Explain.AppendixLO1
Interpretation Zane is examining two studies involving how different generations classify specified items as either luxuries or necessities. In the first study, the Echo generation is defined to be people ages 18–29. The second study defined the Echo generation to be people ages 20–31. Zane
Critical Thinking A randomized block design was used to study the amount of grants awarded to students at a large university. One block consisted of undergraduate students and the other block consisted of graduate students. Samples of size 30 were taken from each block. Could the combined sample of
Critical Thinking A brief survey regarding opinions about recycling was carefully designed so that the wording of the questions would not influence the responses. Charlie administered the survey at a farmer’s market. They approached adults and asked if they would fill out the survey, explaining
Statistical Literacy Consider a completely randomized experiment in which a control group is given a placebo for congestion relief and a treatment group is given a new drug for congestion relief.Describe a double-blind procedure for this experiment and discuss some benefits of such a
Statistical Literacy A study of college graduates involves three variables: income level, job satisfaction, and one-way commute times to work. List some ways the variables might be confounded.AppendixLO1
Discuss potential pitfalls that might make your data unreliable.AppendixLO1
Identify control groups, placebo effects, completely randomized experiments, and randomized block experiments.AppendixLO1
Describe simulations, observational studies, and experiments.AppendixLO1
Define a census.AppendixLO1
Sampling Methods: Health Care Modern Managed Hospitals (MMH) is a national for-profit chain of hospitals. Management wants to survey patients discharged this past year to obtain patient satisfaction profiles. They wish to use a sample of such patients.Several sampling techniques are described
Sampling Methods: Benefits Package An important part of employee compensation is a benefits package, which might include health insurance, life insurance, child care, vacation days, retirement plan, parental leave, bonuses, etc. Suppose you want to conduct a survey of benefits packages available in
Education: Test Construction Professor Gill uses true–false questions. She wishes to place 20 such questions on the next test. To decide whether to place a true statement or a false statement in each of the 20 questions, she uses a random-number table. She selects 20 digits from the table. An
Education: Test Construction Professor Gill is designing a multiple-choice test. There are to be 10 questions. Each question is to have five choices for answers. The choices are to be designated by the lettersa,b, c,d, ande. Professor Gill wishes to use a randomnumber table to determine which
Simulation: Birthday Problem Suppose there are 30 people at a party. Do you think any two share the same birthday? Let’s use the random-number table to simulate the birthdays of the 30 people at the party.Ignoring leap year, let’s assume that the year has 365 days. Number the days, with 1
Computer Simulation: Roll of a Die A die is a cube with dots on each face. The faces have 1, 2, 3, 4, 5, or 6 dots. The table below is a computer simulation (from the software package Minitab) of the results of rolling a fair die 20 times.DATA DISPLAY ROW C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 1 5 2 2 2 5
Simulation: Coin Toss Use a random-number table to simulate the outcomes of tossing a quarter 25 times.Assume that the quarter is balanced (i.e., fair).AppendixLO1
Sampling: Random Use a random-number table to generate a list of six random numbers from 1 to 8615.Explain your work.AppendixLO1
Sampling: Random Use a random-number table to generate a list of eight random numbers from 1 to 976. Explain your work.AppendixLO1
Sampling: Random Use a random-number table to generate a list of 10 random numbers between 1 and 99.Explain your work.AppendixLO1
Critical Thinking In each of the following situations, the sampling frame does not match the population, resulting in undercoverage. Give examples of population members that might have been omitted.(a) The population consists of all 250 students in your large statistics class. You plan to obtain a
Critical Thinking Suppose you are assigned the number 1, and the other students in your statistics class call out consecutive numbers until each person in the class has his or her own number. Explain how you could get a random sample of four students from your statistics class.(a) Explain why the
Critical Thinking Consider the students in your statistics class as the population and suppose they are seated in four rows of 10 students each. To select a sample, you toss a coin. If it comes up heads, you use the 20 students sitting in the first two rows as your sample. If it comes up tails, you
Critical Thinking Parker took a random sample of size 100 from the population of current season ticket holders to State College men’s basketball games. Then Parker took a random sample of size 100 from the population of current season ticket holders to State College women’s basketball games.(a)
Interpretation A campus performance series features plays, music groups, dance troops, and stand-up comedy. The committee responsible for selecting the performance groups include three students chosen at random from a pool of volunteers. This year the 30 volunteers came from a variety of majors.
Interpretation In a random sample of 50 students from a large university, all the students were between 18 and 20 years old. Can we conclude that the entire population of students at the university is between 18 and 20 years old? Explain.AppendixLO1
Statistical Literacy A random sample of students who use the college recreation center were asked if they approved increasing student fees for all students in order to add a climbing wall to the recreation center.Describe the sample frame. Does the sample frame include all students enrolled in the
Statistical Literacy Perry conducted a study of the cost of breakfast cereal. They recorded the costs of several boxes of cereal. However, Perry neglected to take into account the number of servings in each box.Someone told Perry not to worry because they just had some sampling error. Comment on
Statistical Literacy Explain the difference between a simple random sample and a systematic sample.AppendixLO1
Statistical Literacy Explain the difference between a stratified sample and a cluster sample.AppendixLO1
Describe stratified sampling, cluster sampling, systematic sampling, multistage sampling, and convenience sampling.AppendixLO1
Simulate a random process.AppendixLO1
Construct a simple random sample using random numbers.AppendixLO1
Explain the importance of random samples.AppendixLO1
Critical Thinking You are interested in the weights of backpacks students carry to class and decide to conduct a study using the backpacks carried by 30 students.(a) Give some instructions for weighing the backpacks. Include unit of measure, accuracy of measure, and type of scale.(b) Do you think
Education: Teacher Evaluation If you were going to apply statistical methods to analyze teacher evaluations, which question form, A or B, would be better?Form A: In your own words, tell how this teacher compares with other teachers you have had.Form B: Use the following scale to rank your teacher
Fishing: Levels of Measurement Categorize these measurements associated with fishing according to level: nominal, ordinal, interval, or ratio.(a) Species of fish caught: perch, bass, pike, trout(b) Cost of rod and reel(c) Time of return home(d) Guidebook rating of fishing area: poor, fair, good(e)
Business: Levels of Measurement Categorize these measurements associated with a robotics company according to level: nominal, ordinal, interval, or ratio.(a) Salesperson’s performance: below average, average, above average(b) Price of company’s stock(c) Names of new products(d) Temperature (8F)
Student Life: Levels of Measurement Categorize these measurements associated with student life according to level: nominal, ordinal, interval, or ratio.(a) Length of time to complete an exam(b) Time of first class(c) Major field of study(d) Course evaluation scale: poor, acceptable, good(e) Score
Archaeology: Ireland The archaeological site of Tara is more than 4000 years old. Tradition states that Tara was the seat of the high kings of Ireland.Because of its archaeological importance, Tara has received extensive study (Reference: Tara: An Archaeological Survey by Conor Newman, Royal Irish
Ecology: Wetlands Government agencies carefully monitor water quality and its effect on wetlands(Reference: Environmental Protection Agency Wetland Report EPA 832-R-93-005). Of particular concern is the concentration of nitrogen in water draining from fertilized lands. Too much nitrogen can kill
Advertising: Auto Mileage What is the average miles per gallon (mpg) for all new hybrid small cars? Using Consumer Reports, a random sample of such vehicles gave an average of 35.7 mpg.(a) Identify the variable.(b) Is the variable quantitative or qualitative?(c) What is the implied
Marketing: Fast Food A national survey asked 1261 U.S. adult fast-food customers which meal (breakfast, lunch, dinner, snack) they ordered.(a) Identify the variable.(b) Is the variable quantitative or qualitative?(c) What is the implied population?AppendixLO1
Interpretation Lucy conducted a survey asking some of her friends to specify their favorite type of TV entertainment from the following list of choices:sitcom; reality; documentary; drama; cartoon; other Do Lucy’s observations apply to all adults? Explain.From the description of the survey group,
Critical Thinking Numbers are often assigned to data that are categorical in nature.(a) Consider these number assignments for category items describing electronic ways of expressing personal opinions:1 = Twitter; 2 = email; 3 = text message;4 = Facebook; 5 = blog Are these numerical assignments at
Statistical Literacy For a set population, does a parameter ever change? If there are three different samples of the same size from a set population, is it possible to get three different values for the same statistic?AppendixLO1
Statistical Literacy What is the difference between a parameter and a statistic?AppendixLO1
Statistical Literacy Are data at the nominal level of measurement quantitative or qualitative?AppendixLO1
Statistical Literacy In a statistical study what is the difference between an individual and a variable?AppendixLO1
How can you design ways to collect data?AppendixLO1
What are other sampling techniques?AppendixLO1
How can you draw a random sample?AppendixLO1
What is the nature of data?AppendixLO1
Why is statistics important?AppendixLO1
What Is Statistics?AppendixLO1
1.1 Describe the sample space of the experiment consisting of flipping four coins simultaneously. Assign the probability to the event consisting of “two heads up and two tails up.” In this experiment it is irrelevant to know which specific coin shows heads up or tails up.
1.2 An experiment consists of rolling two dice simultaneously and independently of one another. Find the probability of the event consisting of having either an odd number in the first roll or a total of 9 in both rolls.
1.3 In the roll of a die, find the probability of the event consisting of having either an even number or a number greater than 4.
1.4 An experiment consists of rolling two dice simultaneously and independently of one another. Show that the two events, “the sum of the two rolls is 8” and “the first roll shows 5” are not statistically independent.
1.5 An experiment consists of rolling two dice simultaneously and independently of one another. Show that the two events, “first roll is even” and “second roll is even” are statistically independent.
1.6 A box contains 5 balls, of which 3 are red and 2 are blue. Calculate (a) the probability of drawing two consecutive red balls and (b) the probability of drawing two consecutive red balls, given that the first draw is known to be a red ball. Assume that after each draw the ball is replaced in
1.7 A box contains 10 balls that can be either red or blue. Of the first three draws, done with replacement, two result in the draw of a red ball. Calculate the ratio of the probability that there are 2 or just 1 red ball in the box and the ratio of probability that there are 5 or 1 red balls.
1.8 In the game of baseball a player at bat either reaches base or is retired. Consider three baseball players: player A was at bat 200 times and reached base 0.310 of times; player B was at bat 250 times, with an on-base percentage of 0.296; player C was at bat 300 times, with an on-base
1.9 An experiment consists of rolling two dice simultaneously and independently of one another. Calculate (a) the probability of the first roll being a 1, given that the sum of both rolls was 5, (b) the probability of the sum being 5, given that the first roll was a 1 and (c) the probability of the
2.1 Consider the exponential distribution f .x/ D ex where 0 and x 0. Show that the distribution is properly normalized, and calculate the mean, variance and cumulative distribution F.x/.
2.2 Consider the sample mean as a random variable defined by x D 1N NX iD1 xi (2.23)where xi are identical independent random variables with mean and variance 2.Show that the variance of x is equal to 2=N.
2.3 J.J. Thomson’s experiment aimed at the measurement of the ratio between the mass and charge of the electron is presented on page 23. Using the datasets for Tube 1 and Tube 2 separately, calculate the mean and variance of the random variables W=Q and I, and the covariance and correlation
2.4 Using J.J. Thomson’s experiment (page 23), verify the statement that “It will be seen from these tables that the value of m=e is independent of the nature of the gas” used in the experiment. You may do so by calculating the mean and standard deviation for the measurements in each gas
2.5 Calculate the sample covariance and correlation coefficient for the following set of data: .0; 2/; .2; 5/; .1; 4/; .3; 1/.
2.6 Prove that the following relationship holds, Var.X/ D EOEX2 2 where is the mean of the random variable X.
3.1 Consider the Gaussian distribution f .x/ D 1p2 2 e.x/2 22 :Calculate the mean and variance and show that all odd moments EOE.X /n of order n 3 are zero.
3.2 Assume that scores from an I.Q. test follow a Gaussian distribution, and that the scores are standardized in such a way that the mean is D 100, and the standard deviation is D 15.(a) Calculate the probability that an I.Q. score is greater or equal than 145.(b) Calculate the probability that

Showing 4500 - 4600 of 6613

First
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
Last

Statistics And Analysis Of Scientific Data 2nd Edition Massimiliano Bonamente - Solutions

Step by Step Answers