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mathematics
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Elementary Statistics A Step By Step Approach 10th Edition Allan G. Bluman - Solutions
People are asked to phone in their response to a survey question.Classify each sample as random, systematic, stratified, cluster, or other.
Every 100th hamburger manufactured is checked to determine its fat content.Classify each sample as random, systematic, stratified, cluster, or other.
A group of unmarried men are selected using random numbers and asked how long it has been since their last date.Classify each sample as random, systematic, stratified, cluster, or other.
All fast-food workers at a randomly selected fast-food restaurant are selected and asked how many hours per week they work.Classify each sample as random, systematic, stratified, cluster, or other.
Give the boundaries of each value.9.54 millimeters.
Give the boundaries of each value.56 yards.
Ages of children in a preschool.Classify each variable as discrete or continuous.
Duration of marriages in America (in years).Classify each variable as discrete or continuous.
Number of students each day who make appointments with a math tutor at a local college.Classify each variable as discrete or continuous.
Weights of the backpacks of first-graders on a school bus.Classify each variable as discrete or continuous.
Ages of women when they were first married.Classify each variable as discrete or continuous.
Number of street corner mailboxes in the city of Philadelphia.Classify each variable as discrete or continuous.
The different species of fish sold by a pet shop store.Classify each variable as qualitative or quantitative.
Amount of garbage (in pounds) discarded by residents of a high-rise apartment complex.Classify each variable as qualitative or quantitative.
Time it takes 10 people to complete a New York Times crossword puzzle.Classify each variable as qualitative or quantitative.
Ages of the players on a professional football team.Classify each as nominal-level, ordinallevel, interval-level, or ratio-level measurement.
Temperatures of 10 toasters.Classify each as nominal-level, ordinallevel, interval-level, or ratio-level measurement.
In a survey of 1500 people who gave up driving, the average of the ages at which they quit driving was 85.State whether descriptive or inferential statistics has been used.
In a poll of 3036 adults, 32% said that they got a flu shot at a retail clinic.State whether descriptive or inferential statistics has been used.
In a survey of 1000 adults, 34% said that they posted notes on social media websites.State whether descriptive or inferential statistics has been used.
In a sample of 100 individuals, 36% think that watching television is the best way to spend an evening.State whether descriptive or inferential statistics has been used.
In the 1980s, a study linked coffee to a higher risk of heart disease and pancreatic cancer. In the early 1990s, studies showed that drinking coffee posed minimal health threats. However, in 1994, a study showed that pregnant women who drank 3 or more cups of tea daily may be at risk for
“. . . Male children born to women who smoke during pregnancy run a risk of violent and criminal behavior that lasts well into adulthood.” Can we infer that smoking during pregnancy is responsible for criminal behavior in people?
“Just 1 capsule of Brand X can provide 24 hours of acid control.” (Actual brand will not be named.) What needs to be more clearly defined in this statement?
“Vitamin E is a proven antioxidant and may help in fighting cancer and heart disease.” Is there anything ambiguous about this claim? Explain.
An ad for an exercise product stated: “Using this product will burn 74% more calories.” What is misleading about this statement?
In an ad for moisturizing lotion, the following claim is made: “. . . it’s the number 1 dermatologist-recommended brand.” What is misleading about this claim?
In many ads for weight loss products, under the product claims and in small print, the following statement is made: “These results are not typical.” What does this say about the product being advertised?
In an ad for women, the following statement was made: “For every 100 women, 91 have taken the road less traveled.”Comment on this statement.
Comment on the following statement, taken from a magazine advertisement: “In a recent clinical study, Brand ABC (actual brand will not be named) was proved to be 1950% better than creatine!”
According to a pilot study of 20 people conducted at the University of Minnesota, daily doses of a compound called arabinogalactan over a period of 6 months resulted in a significant increase in the beneficial lactobacillus species of bacteria. Why can’t it be concluded that the compound is
List the steps you should perform when conducting a statistical study.
Eating 21 grams of fiber may help you to lose weight.Give a reason why the statement made might be misleading.
By reading this book, you will increase your IQ by 20 points.Give a reason why the statement made might be misleading.
Our pain medicine will give you 24 hours of pain relief.Give a reason why the statement made might be misleading.
Here is the whole truth about back pain.Give a reason why the statement made might be misleading.
Our product will give you the perfect body.Give a reason why the statement made might be misleading.
York University in Toronto, Canada, stated that people who had suffered from fibromyalgia were able to reduce their pain by participating in twice-weekly yoga sessions.Suggest some confounding variables that the researcher might want to consider when doing a study.
A leading journal reported that people who have a more flexible work schedule are more satisfied with their jobs.Suggest some confounding variables that the researcher might want to consider when doing a study.
The New England Journal of Medicine reported that when poor women move to better neighborhoods, they lower the risk of developing obesity and diabetes.Suggest some confounding variables that the researcher might want to consider when doing a study.
Psychology Today magazine reports that the more intelligent a person is (based on IQ), the more willing the person is to make a cooperative choice rather than a selfish one.Suggest some confounding variables that the researcher might want to consider when doing a study.
A study was conducted to determine if the marital status of an individual had any effect on the cause of death of the individual.Identify the independent variable and the dependent variable.
A study was conducted to determine whether when a restaurant server drew a happy face on the check, that would increase the amount of the tip.Identify the independent variable and the dependent variable.
The Journal of Behavioral Medicine reported that sharing a hug and holding hands can limit the physical effects of stress such as soaring heart rate and elevated blood pressure.Identify the independent variable and the dependent variable.
According to the British Journal of Sports Medicine, a regular 30-minute workout could slash your risk of catching a cold by 43%.Identify the independent variable and the dependent variable.
Two groups of students were randomly selected. The students in Group 1 were enrolled in the general studies program. Group 2 students were enrolled in a specific major program (i.e., business, engineering, social work, criminal justice, etc.). At the end of the first year of study, the grade point
A study was done on two groups of overweight individuals. Group 1 was placed on a healthy, moderate diet. Group 2 was not given any diet instructions. After 1 month, the members were asked how many times they engaged in binge eating. The results of the two groups were compared.Determine whether an
A study using college students was conducted to see if the percentage of males who pay for a date was equal to the percentage of females who pay for a date.Determine whether an observational study or an experimental study was used.
A survey was taken to see how many times in a month a person encountered a panhandler on the street.Determine whether an observational study or an experimental study was used.
Why is replication used in statistical studies?
What is the difference between a completely randomized design and a matched-pair design?
Why do researchers use randomization in statistical studies?
What is meant by blinding and double-blinding?
Define the placebo effect in a statistical study.
Explain the Hawthorne effect.
Why are a treatment group and a control group used in a statistical study?
What is the difference between independent variables and dependent variables?
What is the difference between an experimental study and a quasi-experimental study?
List some advantages and disadvantages of an experimental study.
List some advantages and disadvantages of an observational study.
Name and define the three types of observational studies.
Ten counties in Pennsylvania are randomly selected to determine the average county real estate tax that the residents pay.Identify the sampling method that was used.
For 15 minutes, all customers entering a selected Wal-Mart store on a specific day are asked how many miles from the store they live.Identify the sampling method that was used.
In a medical research study, a researcher selects a hospital and interviews all the patients that day.Identify the sampling method that was used.
In a large school district, a researcher numbers all the full-time teachers and then randomly selects 30 teachers to be interviewed.Identify the sampling method that was used.
To determine how long people exercise, a researcher interviews 5 people selected from a yoga class, 5 people selected from a weight-lifting class, 5 people selected from an aerobics class, and 5 people from swimming classes.Identify the sampling method that was used.
To check the accuracy of a machine filling coffee cups, every fifth cup is selected, and the number of ounces of coffee is measured.Identify the sampling method that was used.
The average January 2012 temperature in Boston was 34.2°F. This was 5.2° higher than the normal January average temperature.Define a population that may have been used and explain how the sample might have been selected.
Taking statins raises the risk of developing diabetes.Define a population that may have been used and explain how the sample might have been selected.
Adults aged 19–50 need 1000 milligrams of calcium per day.Define a population that may have been used and explain how the sample might have been selected.
A researcher found that the average size of a household in the United States was 2.54 people.Define a population that may have been used and explain how the sample might have been selected.
Time magazine reported that 25% of the world’s prisoners and prisons are in the United States.Define a population that may have been used and explain how the sample might have been selected.
Time magazine reported that 83% of people with household earnings over $200,000 have a bachelor’s degree.Define a population that may have been used and explain how the sample might have been selected.
Why are random numbers used in sampling, and how are random numbers generated?
What is meant by sampling error and nonsampling error?
Name five ways that data can be collected.
Horsepower of automobile enginesClassify following as nominal-level, ordinal-level, interval-level, or ratio-level measurement.
Online spending in dollarsClassify following as nominal-level, ordinal-level, interval-level, or ratio-level measurement.
Blood types—O, A, B, ABClassify following as nominal-level, ordinal-level, interval-level, or ratio-level measurement.
Rating of cooked ribs at a rib cook-offClassify following as nominal-level, ordinal-level, interval-level, or ratio-level measurement.
Scores on a statistical final examClassify following as nominal-level, ordinal-level, interval-level, or ratio-level measurement.
Distances communication satellites in orbit are from EarthClassify following as nominal-level, ordinal-level, interval-level, or ratio level measurement.
Classify following as nominal-level, ordinal-level, interval-level, or ratio-level measurement.Leap years: . . . 2016, 2020, 2024, . . .
Classify following as nominal-level, ordinal-level, interval-level, or ratio-level measurement.Telephone numbers
Give the boundaries of following value.19 quarts
Give the boundaries of following value.200.7 miles
Give the boundaries of following value.19.63 tons
Give the boundaries of following value.143 miles
Give the boundaries of following value.6.3 millimeters
Give the boundaries of following value.24 feet
Temperatures at a seashore resortDetermine whether the data are discrete or continuous.
Number of students in the mathematics classes during the fall semester at your school for a particular school yearDetermine whether the data are discrete or continuous.
Votes received by mayoral candidates in a city electionDetermine whether the data are discrete or continuous.
Weights of the suitcases of airline passengers on a specific flightDetermine whether the data are discrete or continuous.
Systolic blood pressure readingsDetermine whether the data are discrete or continuous.
Number of phone calls received by a 911 call center each dayDetermine whether the data are discrete or continuous.
Determine whether the data are qualitative or quantitative.Ratings of teachers
Number of degrees awarded by a college each year for the last 10 yearsDetermine whether the data are qualitative or quantitative.
Determine whether the data are qualitative or quantitative.Microwave wattage
Determine whether the data are qualitative or quantitative.Cholesterol counts for individuals
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