Student's Solutions Manual For Intro Stats
5th Edition
ISBN: 9780134265353
Author: William B Craine
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 3, Problem 22E
a.
To determine
Find in which of the categories is the difference between fathers and mothers greatest.
b.
To determine
Find the proportion of Mothers work full-time and find the proportion would like to work full-time.
c.
To determine
Find the proportion of fathers stay at home and compare this with the proportion of mothers saying at home.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The IMF declared in June 2022 that "the world's slowest roads are found in the poorest countries--yet another impediment to economic development." They utilized Google Maps to calculate the average time it takes to drive between large cities at least 80 kilometers apart.
Your team, as a researcher with another international organization, wants to see if there are any disparities based on continent classifications. Despite the fact that you do not have access to the same data, your team was able to determine that the average permissible speed in urban areas (in kilometers) for a sample of 21 Caribbean countries is 42.57km. It is worth noting that the allowable speed in Caribbean countries varies by 74 km2. Your team leader has requested that you answer the following questions.
a) According to the IMF, the world's fastest roads are found in wealthy countries such as Portugal, Saudi Arabia, and Canada. If the average speed in these countries' urban areas is 48.33, use an acceptable…
The National Center for Health Statistics (NICH) published a report entitled Health, Pakistan, containing extensive information on major trends in the health of Pakistanis. Data are provided for the Pak population as a whole and for specific ages, sexes and races. The NICH report indicated that in 2012 Pakistanis paid an average of Rs.3,302 per month on health care and prescription drugs. An investigator hypothesizes that in 2015 expenditures have increases primarily due to the availability of generic drugs. To test the hypothesis, samples of 100 Pakistanis are selected and their expenditures on health care and prescription drugs in 2015 are measured. The sample data are summarized as follows: n=100, R =Rs3,390 and s=Rs890. Is there statistical evidence of increased in expenditures on health care and prescription drugs in 2015? Is the sample mean of Rs.3,390 evidence of a true increase in the mean or is it within chance fluctuation?
Each year, more than 2 million people in the United States become infected with bacteria that are resistant to antibiotics. In particular, the Centers of Disease Control and Prevention have launched studies of drug-resistant gonorrhea.† Suppose that, of 221 cases tested in a certain state, 14 were found to be drug-resistant. Suppose also that, of 322 cases tested in another state, 6 were found to be drug-resistant. Do these data suggest a statistically significant difference between the proportions of drug-resistant cases in the two states? Use a 0.02 level of significance. (Let p1 = the population proportion of drug-resistant cases in the first state, and let p2 = the population proportion of drug resistant cases in the second state.)
1) State the null and alternative hypotheses. (Enter != for ≠ as needed.)
2) What is the test statistic & P-value?
3) what is the conclusion?
A) Reject H0. There is a significant difference in drug resistance between the two states.
B) Reject H0.…
Chapter 3 Solutions
Student's Solutions Manual For Intro Stats
Ch. 3.2 - A statistics class reports the following data on...Ch. 3.2 - A statistics class reports the following data on...Ch. 3.2 - A statistics class reports the following data on...Ch. 3.2 - Prob. 4JCCh. 3.2 - Prob. 5JCCh. 3.2 - A statistics class reports the following data on...Ch. 3.2 - Prob. 7JCCh. 3 - Prob. 1ECh. 3 - Cyber comparison shopping It has become common for...Ch. 3 - College value again Consider the survey data in...
Ch. 3 - Cyber comparison shopping again a) Find the...Ch. 3 - Prob. 5ECh. 3 - Prob. 6ECh. 3 - Fish and prostate cancer revisited Here is a...Ch. 3 - Prob. 8ECh. 3 - Prob. 9ECh. 3 - Prob. 10ECh. 3 - Movie genres and ratings The following table...Ch. 3 - Prob. 12ECh. 3 - Prob. 15ECh. 3 - Prob. 16ECh. 3 - Prob. 17ECh. 3 - Prob. 18ECh. 3 - Prob. 19ECh. 3 - Prob. 20ECh. 3 - Prob. 21ECh. 3 - Prob. 22ECh. 3 - Prob. 23ECh. 3 - Prob. 24ECh. 3 - Prob. 25ECh. 3 - Prob. 26ECh. 3 - Prob. 27ECh. 3 - Prob. 28ECh. 3 - Prob. 29ECh. 3 - Politics Students in an Intro Stats course were...Ch. 3 - Prob. 31ECh. 3 - Prob. 32ECh. 3 - More about seniors Look again at the table of...Ch. 3 - Politics revisited Look again at the table of...Ch. 3 - Prob. 35ECh. 3 - More politics Look once more at the table...Ch. 3 - Prob. 37ECh. 3 - Parking lots A survey of autos parked in student...Ch. 3 - Weather forecasts Just how accurate are the...Ch. 3 - Prob. 40ECh. 3 - Blood pressure A company held a blood pressure...Ch. 3 - Prob. 42ECh. 3 - Prob. 43ECh. 3 - Antidepressants and bone fractures For a period of...Ch. 3 - Prob. 45ECh. 3 - Prob. 46ECh. 3 - Diet and politics shuffled In Exercise 5 you were...Ch. 3 - Prob. 48ECh. 3 - Hospitals Most patients who undergo surgery make...Ch. 3 - Delivery service A company must decide which of...Ch. 3 - Graduate admissions A 1975 article in the magazine...Ch. 3 - Be a Simpson Can you design a Simpsons paradox?...
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
- Write down hypothese and hypothese test about " e-commerce platform; cross-border e-commerce platform"?arrow_forwardif the Null Hypothesis is "There is no relationship between gender and level of productivity" then based on the table we can conclude that "there is relationship between gender and level of productivity".arrow_forwardEach year, more than 2 million people in the United States become infected with bacteria that are resistant to antibiotics. In particular, the Centers of Disease Control and Prevention have launched studies of drug-resistant gonorrhea.† Suppose that, of 205 cases tested in a certain state, 13 were found to be drug-resistant. Suppose also that, of 375 cases tested in another state, 7 were found to be drug-resistant. Do these data suggest a statistically significant difference between the proportions of drug-resistant cases in the two states? Use a 0.02 level of significance. (Let p1 = the population proportion of drug-resistant cases in the first state, and let p2 = the population proportion of drug resistant cases in the second state.) State the null and alternative hypotheses. (Enter != for ≠ as needed.) A. H0: Ha: B. a) Find the value of the test statistic. (Round your answer to two decimal places.) b) What is the p-value? (Round your answer to four decimal…arrow_forward
- If you were a drug regulator, would you prefer to face the distribution of error from the first or the second image below? Explain why in terms of the minimum amount of Type I and Type II error achievable in each image. What does this mean for the potential to use policy incentives to expedite creation of a coronavirus vaccine or treatment? (please help me, thank you.arrow_forwardWhat is the predicted length of stay for a 50-year-old male with no complicating diagnosis and no comorbidity (i.e., that also means no heart disease, diabetes, hypertension, obesity, peritonitis, or cancer), who had a 1-day pre-operative stay, and there were no complications during the surgery? Interpret the estimated parameters for pre-operative LOS and the presence of complications. What strikes you about (the values of) the estimated model parameters? What phenomenon may explain some of these puzzling results?arrow_forwardOn August 24, 2010, a headline in The Boston Globe read “Researchers link chronic fatigue syndrome to class of virus”. The story reported on a study of 37 patients with the disease. 32 tested positive for a particular suspicious virus. Only 3 of 44 healthy people tested positive. A 2003 study in the Archives of Internal Medicine reported that “The overall ... prevalence of CFS ... was 235 per 100,000 persons.” Construct the contingency table for this diagnostic tool. Explain why this test is potentially important for research on chronic fatigue syndrome but might not be a good screening test.arrow_forward
- Each year U.S. News and World Report conducts its "Survey of America's Best Graduate and Professional Schools." and ranks the top 25 business schools, as determined by reputation, student selectivity, placement success, and graduation rate. For each school, three variables were measured: (1) GMAT score for the typical incoming student; (2) student acceptance rate (percentage accepted of all students who applied); and (3) starting salary of the typical graduating student. An academic advisor wants to predict the typical starting salary of a graduate at a top business school using GMAT score of the school as a predictor variable. The results of a simple linear regression of SALARY versus GMAT using the 25 data points are shown below. Is there sufficient evidence to suggest there is a linear relationship between SALARY and GMAT at the 5% level of significance? ----------------------------------------------------------------------------------- a = -92040 b = 228 s = 3213 r2 = .66 r =…arrow_forwardEach year U.S. News and World Report conducts its "Survey of America's Best Graduate and Professional Schools." and ranks the top 25 business schools, as determined by reputation, student selectivity, placement success, and graduation rate.For each school, three variables were measured: (1) GMAT score for the typical incoming student; (2) student acceptance rate (percentage accepted of all students who applied); and (3) starting salary of the typical graduating student. An academic advisor wants to predict the typical starting salary of a graduate at a top business school using GMAT score of the school as a predictor variable. The results of a simple linear regression of SALARY versus GMAT using the 25 data points are shown below. Is there sufficient evidence to suggest there is a linear relationship between SALARY and GMAT at the 5% level of significance? ----------------------------------------------------------------------------------- a = -92040 b = 228 s = 3213 r2 = .66 r =…arrow_forwardIn a study conducted by the U.S. Department of Health and Human Services, a sample of 546 boys aged 6–11 was weighed, and it was determined that 87 of them were overweight. A sample of 508 girls aged 6–11 was also weighed, and 74 of them were overweight. Can you conclude that the proportion of boys who are overweight differs from the proportion of girls who are overweight? Please show calcularrow_forward
- An article in The Boston Globe headlined “Surgery offers no advantage for early prostate cancer, study finds” reported on a clinical trial involving 731 men diagnosed with prostate cancer. About half had surgery; the rest were monitored. After 12 years, nearly 6 percent of men who had immediate surgery died of the cancer, compared with slightly more than 8 percent of those patients who were observed, which was not a great enough difference to reach statistical significance. Construct the contingency table for this study.arrow_forwardOne of the reasons health care costs have been rising rapidly in recent years is the increasing cost of malpractice insurance for physicians. Also, fear of being sued causes doctors to run more precautionary tests (possibly unnecessary) just to make sure they are not guilty of missing something. These precautionary tests also add to health care costs. Data in the Excel file provided below are consistent with findings in the Reader's Digest article and can be used to estimate the proportion of physicians over the age of 55 who have been sued at least once. a. Formulate hypotheses that can be used to see if these data can support a finding that more than half of physicians over the age of 55 have been sued at least once. _________<>≤≥=≠ 0.50 _________<>≤≥=≠ 0.50 b. Use the Excel file provided to compute the sample proportion of physicians over the age of 55 who have been sued at least once (to 2 decimals). Calculate the value of the test statistic (to 2…arrow_forwardAn analysis was conducted by the Statistics Consulting Center atVirginia Polytechnic Institute and State University in which acertain treatment was applied to a set of tree stumps. The chemicalGarlon was used the with the purpose of regenerating the roots ofthe stumps. A spray was used with four levels of GarlonPage 23 of 23concentration. After a period of time the height of the shoots wasobserved. Does the concentration of Garlon has a significantimpact on the height of the shoots? Use α = 0.05.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
Probability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage Learning
Statistics for The Behavioral Sciences (MindTap C...StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning
Elementary Statistics: Picturing the World (7th E...StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSON
The Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. Freeman
Introduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman
MATLAB: An Introduction with Applications
Statistics
ISBN:9781119256830
Author:Amos Gilat
Publisher:John Wiley & Sons Inc
Probability and Statistics for Engineering and th...
Statistics
ISBN:9781305251809
Author:Jay L. Devore
Publisher:Cengage Learning
Statistics for The Behavioral Sciences (MindTap C...
Statistics
ISBN:9781305504912
Author:Frederick J Gravetter, Larry B. Wallnau
Publisher:Cengage Learning
Elementary Statistics: Picturing the World (7th E...
Statistics
ISBN:9780134683416
Author:Ron Larson, Betsy Farber
Publisher:PEARSON
The Basic Practice of Statistics
Statistics
ISBN:9781319042578
Author:David S. Moore, William I. Notz, Michael A. Fligner
Publisher:W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:9781319013387
Author:David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:W. H. Freeman
Statistics 4.1 Introduction to Inferential Statistics; Author: Dr. Jack L. Jackson II;https://www.youtube.com/watch?v=QLo4TEvBvK4;License: Standard YouTube License, CC-BY