Bundle: Modern Business Statistics with Microsoft Office Excel, Loose-Leaf Version, 6th + MindTap Business Statistics, 2 terms (12 months) Printed Access Card
6th Edition
ISBN: 9781337589383
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 1, Problem 21SE
A seven-year medical research study reported that women whose mothers took the drug DES during pregnancy were twice as likely to develop tissue abnormalities that might lead to cancer as were women whose mothers did not take the drug.
- a. This study compared two populations. What were the populations?
- b. Do you suppose the data were obtained in a survey or an experiment?
- c. For the population of women whose mothers took the drug DES during pregnancy, a sample of 3980 women showed that 63 developed tissue abnormalities that might lead to cancer. Provide a
descriptive statistic that could be used to estimate the number of women out of 1000 in this population who have tissue abnormalities. - d. For the population of women whose mothers did not take the drug DES during pregnancy, what is the estimate of the number of women out of 1000 who would be expected to have tissue abnormalities?
- e. Medical studies often use a relatively large sample (in this case. 3980). Why ?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Please help step by step with explanation for Program R (CS) with a final code for understanding thank you.
Solve the problem using STEPWISE Method. Remember to use the step by step procedures (Step 1-7)
9.
The national average SAT score (for Verbal and Math) is 1028. Suppose that nothing is
known about the shape of the distribution and that the standard deviation is 100. If a
random sample of 200 scores were selected and the sample mean were calculated to be
1050, would you be surprised? Explain.
Chapter 1 Solutions
Bundle: Modern Business Statistics with Microsoft Office Excel, Loose-Leaf Version, 6th + MindTap Business Statistics, 2 terms (12 months) Printed Access Card
Ch. 1 - 1. Discuss the differences between statistics as...Ch. 1 - 2. Tablet PC Comparison provides a wide variety of...Ch. 1 - 3. Refer to Table 1.6.
What is the average cost...Ch. 1 - 4. Table 1.7 shows data for eight cordless...Ch. 1 - 5. Refer to the data set in Table 1.7.
What is the...Ch. 1 - 6. J.D. Power and Associates surveys new...Ch. 1 - 7. The Kroger Company is one of the largest...Ch. 1 - 8. The Tennessean, an online newspaper located in...Ch. 1 - 9. The Commerce Department reported receiving the...Ch. 1 - 10. The Bureau of Transportation Statistics...
Ch. 1 - 11. In a Gallup telephone survey conducted on...Ch. 1 - 12. The Hawaii Visitors Bureau collects data on...Ch. 1 - Figure 1.10 provides a bar chart showing the...Ch. 1 - The following data show the number of rental cars...Ch. 1 - The U.S. Census Bureau tracks sales per month for...Ch. 1 - 17. A manager of a large corporation recommends a...Ch. 1 - 18. A random telephone survey of 1021 adults (aged...Ch. 1 - 19. A Bloomberg Businessweek North American...Ch. 1 - 20. A survey of 131 investment managers in...Ch. 1 - 21. A seven-year medical research study reported...Ch. 1 - Prob. 22SECh. 1 - Pew Research Center is a nonpartisan polling...Ch. 1 - 24. A sample of midterm grades for five students...Ch. 1 -
Table 1.8 shows a data set containing information...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Similar questions
- In python, for a sample data with 4 columns and 60 rows how do you find the parameters for the regression with the feature map (see attached) where we consider the loss function to be the square of residuals. Once this is done, how do you compute the empirical risk? I've attached some of the data below, it would be sufficient to see how you get results for the question using the above dataset. 1 14 25 620 -1 69 29 625 0 83 27 850 0 28 25 1315 1 41 25 2120 -1 153 31 1315 0 55 25 2600 0 55 31 490 1 69 25 3110 1 83 25 3535arrow_forwardA group of researchers conducted a study to investigate the effectiveness of a new teaching method for a particular subject. They randomly assigned 100 students to two groups: one group received the new teaching method, and the other group received the traditional teaching method. At the end of the semester, they measured the students' performance on a standardized test. The researchers found that the mean score for the group that received the new teaching method was higher than the mean score for the group that received the traditional teaching method. How can the researchers test the hypothesis that the new teaching method is more effective than the traditional teaching method? What statistical test should they use?arrow_forwardb) Given the following statistics, what is the probability that a woman has cancer if she has a positive mammogram result? -One percent of women over 50 have breast cancer. -Ninety percent of women who have breast cancer test positive on mammograms. -Eight percent of women will have false positives.arrow_forward
- An instructor who taught two sections of engineering statistics last term, the first with 25 students and the second with 40, decided to assign a term project. After all projects had been turned in, the instructor randomly ordered them before grading. Consider the first 15 graded projects. (a) What is the probability that exactly 10 of these are from the second section? (Round your answer to four decimal places.) (b) What is the probability that at least 10 of these are from the second section? (Round your answer to four decimal places.) (c) What is the probability that at least 10 of these are from the same section? (Round your answer to four decimal places.) (d) What are the mean value and standard deviation of the number among these 15 that are from the second section? (Round your mean to the nearest whole number and your standard deviation to three decimal places.) mean projectsstandard deviation projects (e) What are the mean value and standard deviation of…arrow_forwardWhen we discuss measures of center and spread, there are certain ones that go together, and certain ones that do not. If we talk about the center in terms of the mean, then spread is described using the ["", ""] . If we talk about the center in terms of the median, then the spread is described using the ["", ""] .arrow_forwardThe brown-eyed man from the previous question also has kids with a woman with brown eyes, whose whole family for the past 10 generations had brown eyes. What percentage of their children can be expected to have blue eyes? a. 0% b. 25% c. 50% d. 75% e. 100%arrow_forward
- Using the data below: How do we create a univariate?arrow_forwardThe following data were collected during a study of consumer buying patterns: Observation Observation y. 69 y. 18 19 81 2 26 81 9 14 75 41 85 10 10 76 4 35 77 11 25 83 56 95 12 21 86 46 93 13 29 90 33 86 Click here for the Excel Data File b. Obtain a linear regression line for the data (Round your intermediote calculations and final answers to 3 decimal places.) y3= c. What percentage of the variation is explained by the regression line? (Do not round intermediate calculations. Round your answer to the nearest whole percent.) Approximately of the varlation in the dependent varlable is explainud by the independent variable d. Use the equation determined in part b to predict the expected value of y for x 44. (Round your intermediate calculations and final answers to 3 decimal places.)arrow_forwardWHAT IS R LANGUANGE COMMAND FOR THIS QUESTION?arrow_forward
- Python Regression Model 1: train MSE = 0.423, test MSE = 0.978 Model 2: train MSE = 0.572, test MSE = 0.644 Model 3: train MSE = 0.218, test MSE = 1.103 Based on this information, which of these models generalises the best to unseen data?arrow_forwardQuestion 14 You do a study on the impact of listening to classical music in babies on IQ scores 5 years later, when entering elementary school. You enroll a large sample of randomly selected families in this study and the study consists of recording how long the baby listened to classical music and their later IQ score. Doing a simple linear regression, you find that you can strongly predict IQ scores from the hours listened to classical music. What should you do next? a) Publish a paper on the "Mozart effect" - how listening to classical music causes babies to be smarter. O b) Take this effect at face value, after all you did an experiment, and it is important to trust the science. c) Do a regression using socioeconomic status (SES) to predict hours listened to classical music. Then do an additional regression using SES to predict later IQ scores. Correlate the residuals of those two regressions and use that correlation in the paper you publish. d) Do an additional regression to see…arrow_forward1. Suppose that a set of samples x1, x2, ..., xn, all real numbers, are drawn i.i.d. from the same distribution. Also assume that this distribution is a Gaussian distribution, which can be represented as N(u, o²). Write a function that accepts a set of samples and returns the MLE estimator for u. NOTE: The code below will be evaluated by a Python 2.7 interpreter. def mle(samples): pass Run Reset Once your function is correct, your will receive a submission code that you should input into the answer field. Enter answer here 2. In the previous question, you were asked to write a function for an estimator of a parameter of a distribution. Is the result of this function, an estimator, a random variable? Yes Noarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Operations Research : Applications and AlgorithmsComputer ScienceISBN:9780534380588Author:Wayne L. WinstonPublisher:Brooks Cole
Operations Research : Applications and Algorithms
Computer Science
ISBN:9780534380588
Author:Wayne L. Winston
Publisher:Brooks Cole
Hypothesis Testing - Solving Problems With Proportions; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=76VruarGn2Q;License: Standard YouTube License, CC-BY
Hypothesis Testing and Confidence Intervals (FRM Part 1 – Book 2 – Chapter 5); Author: Analystprep;https://www.youtube.com/watch?v=vth3yZIUlGQ;License: Standard YouTube License, CC-BY