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Introductory Statistics

1st Edition

Barbara Illowsky, Susan Dean

Publisher: OpenStax College

ISBN: 9781938168208

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Chapter

Section

Problem 1.1TI:

Determine what the key terms refer to in the following study we want to know the average (mean)...

Problem 1.5TI:

The data are the number of machines in a gym. You sample five gyms. One gym has 12 machines, one gym...

Problem 1.6TI:

The data are the areas of Lawns in square feet. You sample five houses. The areas of the lawns are...

Problem 1.8TI:

The data are the colors of houses. You sample five houses. The colors of the houses are white,...

Problem 1.9TI:

Determine the correct data type (quantitative or qualitative) for the number of cars in a parking...

Problem 1.10TI:

The registrar at State University keeps records of the number of credit hours students complete each...

Problem 1.11TI:

You are going to use the random number generator to generate different types of samples from the...

Problem 1.12TI:

Determine the type of sampling used (simple random, stratified, systematic, cluster, or...

Problem 1.13TI:

A local radio station has a fan base of 20,000 listeners. The station wants to know If its audience...

Problem 1.14TI:

Table 1.13 shows the amount, in inches, of annual rainfall in a sample of towns. From Table 1.13,...

Problem 1.15TI:

From Table 1.13, find the percentage of rainfall that is between 6.99 and 13.05 inches.

Problem 1.16TI:

From Table 1.13, find the number of towns that have rainfall between 2.95 and 9.01 inches.

Problem 1.17TI:

Table 1.13 represents the amount, in inches, of annual rainfall in a sample of towns. What fraction...

Problem 1.18TI:

Table 1.16 contains the total number of fatal motor vehicle traffic crashes in the United States for...

Problem 1.21TI:

You are concerned about the effects of texting on driving performance. Design a study to test the...

Problem 1.22TI:

Describe the unethical behavior, if any, in each example and describe how it could impact the...

Problem 1P:

Determine that the key terms refer to in the example for Researcher A. 1. population Researcher A:...

Problem 2P:

Determine that the key terms refer to in the example for Researcher A. sample Researcher A: 3; 4;...

Problem 3P:

Determine that the key terms refer to in the example for Researcher A. Researcher A: 3; 4; 11; 15;...

Problem 4P:

Determine that the key terms refer to in the example for Researcher A. Researcher A: 3; 4; 11; 15;...

Problem 5P:

Determine that the key terms refer to in the example for Researcher A. 5. variable Researcher A: 3;...

Problem 6P:

“Number of times per week” Is what type of data? a. qualitative(categorical); b. quantitative...

Problem 8P:

“Duration (amount of time)” is what type of data? a. qualitative(categorical); b. quantitative...

Problem 9P:

The colors of the houses around the park are what kind of data? a. qualitative( categorical); b....

Problem 10P:

The population is ________

Problem 11P:

Table 1.26 contains the total number of deaths worldwide as a result of earthquakes from 2000 to...

Problem 12P:

For the f1onwing four exercises, determine the type of sampling used (simple random, stratified,...

Problem 13P:

For the f1onwing four exercises, determine the type of sampling used (simple random, stratified,...

Problem 14P:

For the f1onwing four exercises, determine the type of sampling used (simple random, stratified,...

Problem 15P:

For the f1onwing four exercises, determine the type of sampling used (simple random, stratified,...

Problem 16P:

Use the following information to answer the next seven exercises: Studies are often done b...

Problem 17P:

Use the following information to answer the next seven exercises: Studies are often done b...

Problem 18P:

Use the following information to answer the next seven exercises: Studies are often done b...

Problem 19P:

Use the following information to answer the next seven exercises: Studies are often done by...

Problem 20P:

Use the following information to answer the next seven exercises: Studies are often done by...

Problem 21P:

Use the following information to answer the next seven exercises: Studies are often done by...

Problem 22P:

Use the following information to answer the next seven exercises: Studies are often done by...

Problem 23P:

Use the following information to answer the next seven exercises: Studies are often done by...

Problem 24P:

Use the following data to answer the next five exercises: Two researchers are gathering data on...

Problem 25P:

Use the following data to answer the next five exercises: Two researchers are gathering data on...

Problem 26P:

Use the following data to answer the next five exercises: Two researchers are gathering data on...

Problem 27P:

Use the following data to answer the next five exercises: Two researchers are gathering data on...

Problem 28P:

Use the following data to answer the next five exercises: Two researchers are gathering data on...

Problem 29P:

Use the following data to answer the next five exercises: A pair of studies was performed to measure...

Problem 30P:

Use the following data to answer the next five exercises: A pair of studies ‘was performed to...

Problem 31P:

Use the following data to answer the next five exercises: A pair of studies ‘was performed to...

Problem 32P:

Use the following data to answer the next five exercises: A pair of studies ‘was performed to...

Problem 33P:

Use the following data to answer the next five exercises: A pair of studies ‘was performed to...

Problem 36P:

A question on a survey reads: “Do you prefer the delicious taste of Brand X or the taste of Brand Y?...

Problem 38P:

Is it possible for two experiments to be well run with similar sample sizes to get different data?

Problem 39P:

What type of measure scale is being used? Nominal, ordinal, interval or ratio. a. High school soccer...

Problem 40P:

Design an experiment. Identify the explanatory and response variables. Describe the population being...

Problem 41P:

Discuss potential violations of the rule requiring informed consent. a. Inmates in a correctional...

Problem 42H:

For each of the following eight exercises, identify: a. the population, b. (he sample, c. the...

Problem 43H:

For each of the following eight exercises, identify: a. the population, b. (he sample, c. the...

Problem 44H:

For each of the following eight exercises, identify: a. the population, b. (he sample, c. the...

Problem 45H:

For each of the following eight exercises, identify: a. the population, b. (he sample, c. the...

Problem 46H:

For each of the following eight exercises, identify: a. the population, b. (he sample, c. the...

Problem 47H:

For each of the following eight exercises, identify: a. the population, b. (he sample, c. the...

Problem 48H:

For each of the following eight exercises, identify: a. the population, b. (he sample, c. the...

Problem 49H:

For each of the following eight exercises, identify: a. the population, b. (he sample, c. the...

Problem 50H:

Use the following information to answer the next three exercises: A Lake Tahoe Community College...

Problem 51H:

Use the following information to answer the next three exercises: A Lake Tahoe Community College...

Problem 52H:

Use the following information to answer the next three exercises: A Lake Tahoe Community College...

Problem 53H:

For the following exercises, identify (he type of data that would be used to describe a response...

Problem 54H:

For the following exercises, identify (he type of data that would be used to describe a response...

Problem 55H:

For the following exercises, identify (he type of data that would be used to describe a response...

Problem 56H:

For the following exercises, identify (he type of data that would be used to describe a response...

Problem 57H:

For the following exercises, identify (he type of data that would be used to describe a response...

Problem 58H:

For the following exercises, identify (he type of data that would be used to describe a response...

Problem 59H:

For the following exercises, identify (he type of data that would be used to describe a response...

Problem 60H:

For the following exercises, identify (he type of data that would be used to describe a response...

Problem 61H:

For the following exercises, identify (he type of data that would be used to describe a response...

Problem 62H:

For the following exercises, identify (he type of data that would be used to describe a response...

Problem 63H:

Use the following information to answer the next two exercises: A study was done to determine the...

Problem 64H:

Use the following information to answer the next two exercises: A study was done to determine the...

Problem 65H:

Airline companies are interested in the consistency of the number of babies on each flight. so that...

Problem 66H:

Suppose you want to determine the mean number of students per statistics class in your state....

Problem 67H:

Suppose you want to determine the mean number of cans of soda drunk each month by students in their...

Problem 68H:

List some practical difficulties involved in getting accurate results from a telephone survey.

Problem 69H:

List some practical difficulties involved in getting accurate results from a mailed survey.

Problem 70H:

With your classmates, brainstorm some ways you could overcome these problems if you needed to...

Problem 71H:

The instructor takes her sample by gathering data on five randomly selected students from each Lake...

Problem 72H:

A study was done to determine the age, number of times per week, and the duration (amount of time)...

Problem 73H:

Name the sampling method used in each of the following situations: a. A woman in the airport is...

Problem 74H:

A “random survey” was conducted of 3,2’4 people of the “microprocessor generation” (people born...

Problem 75H:

The Well-Being Index is a survey that follows trends of U.S. residents on a regular basis. There are...

Problem 76H:

In advance of the 1936 Presidential Election, a magazine titled Literary Digest released the results...

Problem 77H:

Crime-related and demographic statistics for 4 US states in 1960 were collected from government...

Problem 78H:

YouPolls is a website that allows anyone to create and respond to polls. One question posted April...

Problem 79H:

A scholarly article about response rates begins with the following quote: “Declining contact and...

Problem 80H:

Fifty part-time students were asked how many courses they were taking this term. The (incomplete)...

Problem 81H:

Sixty adults with gum disease were asked the number of times per week they used to floss before...

Problem 82H:

Nineteen immigrants to the U.S were asked how many ears, to the nearest year, they have lived in the...

Problem 83H:

How much time does it take to navel to work? Table 1.36 shows the mean commute time by state for...

Problem 84H:

Forbes magazine published data on the best small firms in 2012. These were firms which had been...

Problem 85H:

Use (he following information o answer the next two exercises: Table 1.38 contains data on...

Problem 86H:

Use (he following information o answer the next two exercises: Table 1.38 contains data on...

Problem 87H:

How does sleep deprivation affect your ability to drive? A recent study measured the effects on 19...

Problem 88H:

An advertisement for Acme Investments displays the two graphs in Figure 1.14 to show the value of...

Problem 89H:

The graph in Figure 1.15 shows the number of complaints for six different airlines as reported to...

Show more chapters

Chapter 1 - Sampling And DataChapter 2 - Descriptive StatisticsChapter 3 - Probability TopicsChapter 4 - Discrete Random VariablesChapter 5 - Continuous Random VariablesChapter 6 - The Normal DistributionChapter 7 - The Central Limit TheoremChapter 8 - Confidence IntervalsChapter 9 - Hypothesis Testing With One SampleChapter 10 - Hypothesis Testing With Two Samples

Introductory Statistics follows the scope and sequence of a one-semester, introduction to statistics course and is geared toward students majoring in fields other than math or engineering. This text assumes students have been exposed to intermediate algebra, and it focuses on the applications of statistical knowledge rather than the theory behind it. The foundation of this textbook is Collaborative Statistics, by Barbara Illowsky and Susan Dean, which has been widely adopted. Introductory Statistics includes innovations in art, terminology, and practical applications, all with a goal of increasing relevance and accessibility for students. We strove to make the discipline meaningful and memorable, so that students can draw a working knowledge from it that will enrich their future studies and help them make sense of the world around them. The text also includes Collaborative Exercises, integration with TI-83,83+,84+ Calculators, technology integration problems, and statistics labs.

We offer sample solutions for Introductory Statistics homework problems. See examples below:

Show more sample solutions

Determine what the key terms refer to in the following study we want to know the average (mean)...For the Park City basketball team, scores for the last 30 games were as follows (smallest to...The sample space S Is all the ordered pairs of two whole numbers, the first from one to three and...A hospital researcher Is Interested In the number of times the average post-op patient will ring the...Consider the function f(x)=18 for 0x8 0. Draw the graph of fix) and find P(2.5What is the z-score of x, when x = 1 and X~N(12,3)?An unknown distribution has a mean of 45 and a standard deviation of eight. Samples of size n = 30...Suppose we have data from a sample. The sample mean is 15, and the error bound for the mean is 3.2....A medical trial is conducted to test whether or not a new medicine reduces cholesterol by 25%. State...

Two samples are shown in Table 10.2. Both have normal distributions. The means for the two...A factory manager needs to understand how many products are defective versus how many are produced....Is the following an example of a linear equation? y=0.1253.5xAs part of an experiment to see how different types of soil cover would affect slicing tomato...

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