Bluman, Elementary Statistics: A Step By Step Approach, © 2015, 9e, Student Edition (reinforced Binding) (a/p Statistics)
9th Edition
ISBN: 9780021418251
Author: Allan G. Bluman
Publisher: MCGRAW-HILL HIGHER EDUCATION
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 14.1, Problem 1AC
The White or Wheat Bread Debate
Read the following study and answer the questions.
A baking company selected 36 women weighing different amounts and randomly assigned them to four different groups. The four groups were white bread only, brown bread only, low-fat white bread only, and low-fat brown bread only. Each group could eat only the type of bread assigned to the group. The study lasted for eight weeks. No other changes in any of the women’s diets were allowed. A trained evaluator was used to check for any differences in the women’s diets. The results showed that there were no differences in weight gain between the groups over the eight-week period.
1. Did the researchers use a population or a sample for their study?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A survey of entrepreneurs focused on their job characteristics, work habits, social activities, leisure
time, etc. One question put to each entrepreneur was, "What make of car (U.S., Europe, or Japan)
do you drive?" The responses (number in each category) for a sample of 100 entrepreneurs are
summarized below. The goal of the analysis is to determine if the proportions of entrepreneurs
who drive American, European, and Japanese cars differ.
U.S. Europe Japan
40
35
25
In order to determine whether the true proportions in each response category differ, a one-way chi-
square analysis should be conducted. Suppose the p-value for the test was calculated to be p = 0.1738.
What is the appropriate conclusion to make when testing at a = 0.10?
A) There is insufficient evidence to indicate the proportion of entrepreneurs driving the
three makes of car differ.
B) There is sufficient evidence to indicate the proportion of entrepreneurs driving the
three makes of car are equal.
C) There is…
According to the U.S. government, it costs more to make a penny, $0.0241, than a penny’s value, $0.01. The U.S. government has considered eliminating pennies from its currency. Canada and Australia decided to eliminate pennies from their currencies. As requirement of the decision, a survey of adult Americans found that two-thirds said that pennies should not be eliminated. If we randomly selected 12 adults:
a. Of the 12 adults, how many would we expect to support continued use of the penny?
b. What is the likelihood that eight adults would support continued use of the penny? (Round your answer to 3 decimal places.)
c. What is the likelihood that the majority of the 12 people, that is seven or more adults, would support the continued use of the penny? (Round your answer to 3 decimal places.)
health insurance benefits vary by the size of the company (Atlanta Business Chronicle, December 31, 2010). The sample data below show the number of companies providing health insurance for small, medium, and large companies. for purposes of this study, small companies are companies that have fewer than 100 employees. Medium-sized companies have 100 to 999 employees, and large companies have 1000 or more employees. The questionnaire sent to 225 employees asked whether or not the employee had health insurance and then asked the employee to indicate the size of the company
a. Conduct a test of independence to determine whether health insurance coverage is independent of the size of the company. What is the p-value? using a .05 level of significance, what is your conclusion?b. a newspaper article indicated employees of small companies are more likely to lack health insurance coverage. use percentages based on the above data to support this conclusion
Chapter 14 Solutions
Bluman, Elementary Statistics: A Step By Step Approach, © 2015, 9e, Student Edition (reinforced Binding) (a/p Statistics)
Ch. 14.1 - The White or Wheat Bread Debate Read the following...Ch. 14.1 - Name the four basic sampling techniques.Ch. 14.1 - Why are samples used in statistics?Ch. 14.1 - What is the basic requirement for a sample?Ch. 14.1 - Why should random numbers be used when you are...Ch. 14.1 - List three incorrect methods that are often used...Ch. 14.1 - What is the principle behind random numbers?Ch. 14.1 - List the advantages and disadvantages of random...Ch. 14.1 - List the advantages and disadvantages of...Ch. 14.1 - List the advantages and disadvantages of...
Ch. 14.1 - List the advantages and disadvantages of cluster...Ch. 14.1 - Prob. 11ECh. 14.1 - Prob. 12ECh. 14.1 - Prob. 13ECh. 14.1 - Prob. 14ECh. 14.1 - Prob. 15ECh. 14.1 - Prob. 16ECh. 14.1 - Electoral Votes Select a systematic sample of 10...Ch. 14.1 - Electoral Votes Divide the 50 states into five...Ch. 14.1 - Prob. 19ECh. 14.2 - Prob. 1ACCh. 14.2 - Prob. 1ECh. 14.2 - Prob. 2ECh. 14.2 - Prob. 3ECh. 14.2 - Prob. 4ECh. 14.2 - Prob. 5ECh. 14.2 - Prob. 6ECh. 14.2 - Prob. 7ECh. 14.2 - Prob. 8ECh. 14.2 - Prob. 9ECh. 14.3 - Simulations Answer the following questions: 1....Ch. 14.3 - Prob. 1ECh. 14.3 - Prob. 2ECh. 14.3 - Who is responsible for the development of modern...Ch. 14.3 - Prob. 4ECh. 14.3 - Prob. 5ECh. 14.3 - Prob. 6ECh. 14.3 - Prob. 7ECh. 14.3 - Prob. 8ECh. 14 - Prob. 14.1.1RECh. 14 - Prob. 14.1.2RECh. 14 - Prob. 14.1.3RECh. 14 - Prob. 14.1.4RECh. 14 - Prob. 14.1.5RECh. 14 - Prob. 14.1.6RECh. 14 - Prob. 14.1.7RECh. 14 - Prob. 14.1.8RECh. 14 - Prob. 14.2.9RECh. 14 - Prob. 14.2.10RECh. 14 - Prob. 14.2.11RECh. 14 - Prob. 14.2.12RECh. 14 - Prob. 1DACh. 14 - Prob. 2DACh. 14 - Select a cluster sample of 20 individuals, and...Ch. 14 - Prob. 4DACh. 14 - Prob. 5DACh. 14 - Determine whether each statement is true or false....Ch. 14 - Prob. 2CQCh. 14 - Prob. 3CQCh. 14 - Prob. 4CQCh. 14 - Prob. 5CQCh. 14 - Prob. 6CQCh. 14 - Interviewing selected people at a local...Ch. 14 - Prob. 8CQCh. 14 - Prob. 9CQCh. 14 - Prob. 10CQCh. 14 - Prob. 1DP
Additional Math Textbook Solutions
Find more solutions based on key concepts
1. How much money is Joe earning when he’s 30?
Pathways To Math Literacy (looseleaf)
(a) Make a stem-and-leaf plot for these 24 observations on the number of customers who used a down-town CitiBan...
APPLIED STAT.IN BUS.+ECONOMICS
Empirical versus Theoretical A Monopoly player claims that the probability of getting a 4 when rolling a six-si...
Introductory Statistics
True or False The quotient of two polynomial expressions is a rational expression, (p. A35)
Precalculus
Check Your Understanding
Reading Check Complete each sentence using > or < for □.
RC1. 3 dm □ 3 dam
Basic College Mathematics
Silvia wants to mix a 40% apple juice drink with pure apple juice to make 2 L of a juice drink that is 80% appl...
Beginning and Intermediate Algebra
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
- Health insurance benefits vary by the size of the company. The sample data below show the number of companies providing health insurance for small, medium, and large companies. For purposes of this study, small companies are companies that have fewer than 100 employees. Medium-sized companies have 100 to 999 employees, and large companies have 1,000 or more employees. The questionnaire sent to 225 employees asked whether or not the employee had health insurance and then asked the employee to indicate the size of the company. Size of the Company Health Insurance Small Medium Large Yes 33 62 85 No 17 13 15 (a) Perform a test of independence to determine if health insurance coverage is related to the size of the company. State the null and alternative hypotheses. Ho: Having health insurance is not independent of the size of the company. H: The proportion of companies with health insurance benefits is not equal for small, medium and large companies. Ho: Having health insurance is…arrow_forwardHealth insurance benefits vary by the size of the company. The sample data below show the number of companies providing health insurance for small, medium, and large companies. For purposes of this study, small companies are companies that have fewer than 100 employees. Medium-sized companies have 100 to 999 employees, and large companies have 1,000 or more employees. The questionnaire sent to 225 employees asked whether or not the employee had health insurance and then asked the employee to indicate the size of the company. Health Insurance Size of the Company Small Medium Large Yes 33 62 85 No 17 13 15 (a) Conduct a test of independence to determine whether health insurance coverage is independent of the size of the company. State the null and alternative hypotheses. H0: Having health insurance is not independent of the size of the company.Ha: The proportion of companies with health insurance benefits is not equal for small, medium and large companies.H0: Having…arrow_forwardThe General Social Survey (GSS) is an opinion survey that has been conducted for more than 30 years by the National Opinion Research Center at the University of Chicago. About 2000 adult Americans are given a 90-minute interview asking about opinions and behaviors for a wide variety of issues. To access the GSS website, go to sda.berkeley.edu/GSS using No Weight as the default weight selection. 1. Americans were asked: Is it the government's responsibility to impose strict laws to make industry do less damage to the environment? Results from both 1996 and 2006 can be found in the GSS. Type GRNLAWS in Row: and YEAR in Column: then Run the table. a) Use StatCrunch and the 2006 data to create a 90% confidence interval for the true proportion of all Americans answering 'definitely should be' to this question. Include a check of the necessary conditions in your answer. Copy and paste the output from StatCrunch. Interpret your interval in context. b) c) Can you conclude whether a majority of…arrow_forward
- In a simple study about coffee habit in two towns, the following information was received: Town A: Females were 40%; Total coffee drinkers were 45% and male non-coffee drinkers were 20%. Town B: Males were 55%, male non-coffee drinkers were 30% and female coffee drinkers were 15%. Represent the above data in a tabular form.arrow_forwardIn a poll of 50,000 randomly selected college students, 74% answered "yes" when asked "Do you have a television in your dorm room?" Identify the sample and population. Select one: a. Sample: all college students; population: the 50,000 selected college students b. Sample: the 50,000 selected college students; population: the 74% who answered "yes" c. Sample: the 74% who answered "yes"; population: all college students d. Sample: the 50,000 selected college students; population: all college studentsarrow_forwardA psychologist studied the alcohol consumption patterns of people in two age groups. One group consisted of people aged 21 to 35 , and the other consisted of people aged 36 to 50 . The psychologist interviewed random and independent samples from each group. She assigned a score from 0 to 100 to each individual (a score of 0 meant no alcohol consumption) according to factors such as the frequency and the amount of alcohol consumed. The results from the study are summarized below: Age 21 to 35 Age 36 to 50 =n128 =n223 =x147.3 =x254.9 =s21153.76 =s22100 (The first row gives the sample sizes, the second row gives the sample means, and the third row gives the sample variances.) Assume that the scores of all people aged 21 to 35 are approximately normally distributed. Assume the same for the scores of all people aged 36 to 50 . Can we conclude, at the 0.1 significance level, that the variance…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill
Holt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL
Big Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin Harcourt
College Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage Learning
Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill
Holt Mcdougal Larson Pre-algebra: Student Edition...
Algebra
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Big Ideas Math A Bridge To Success Algebra 1: Stu...
Algebra
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:Houghton Mifflin Harcourt
College Algebra (MindTap Course List)
Algebra
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:Cengage Learning
Sampling Methods and Bias with Surveys: Crash Course Statistics #10; Author: CrashCourse;https://www.youtube.com/watch?v=Rf-fIpB4D50;License: Standard YouTube License, CC-BY
Statistics: Sampling Methods; Author: Mathispower4u;https://www.youtube.com/watch?v=s6ApdTvgvOs;License: Standard YouTube License, CC-BY