Exam 13: Understanding Research Results: Statistical Inference

According to a survey,57 percent of the citizens of the United States prefer a Democratic candidate,while 43 percent of the citizens prefer a Republican candidate in an election.The survey reports a confidence interval (CFI)of 95 percent + or -3.What can be concluded from these results?

(Multiple Choice)

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Question 41

A researcher was interested in the differences in the opinions about marriage between men and women.She predicted that women would have different opinions about marriage from men.What would the null hypothesis suggest in this situation?

(Multiple Choice)

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Question 42

When analyzing the difference between two means,Professor Angus obtains the effect size as .85 using Cohen's d.In this case,Professor Angus can conclude that:

(Multiple Choice)

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Question 43

Aden finds that,on an average,men have higher starting salaries than women.In order to conclude that the differences in starting salaries are true differences and not a result of random error,Aden would employ the use of _____ statistics.

(Multiple Choice)

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Question 44

A consumer analyst asks participants to rate the comfort of the ride for two brands of all-terrain tires-Trail Cushion and Mud Handler.Trail Cushion is rated more comfortable with a mean of 5.5 than Mud Handler,which is found to have a mean of 4.3.The Type I error would be to conclude that Trail Cushion is:

(Multiple Choice)

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Question 45

A desired probability of correctly rejecting the null hypothesis is the _____.

(Multiple Choice)

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Question 46

The appropriate statistical test for interval or ratio level data is the _____.

(Multiple Choice)

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Question 47

A researcher wants to know if cholesterol levels are lower in vegetarians or nonvegetarians.Which statistical test would be most appropriate for this data?

(Multiple Choice)

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Question 48

Which of the following is the least accurate statement about the use of statistical tests?

(Multiple Choice)

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Question 49

The appropriate statistical test for nominal level data of two groups is the:

(Multiple Choice)

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Question 50

According to her statistical analysis,an investigator found that significantly more men than women used punishment to discipline their children.Thus,the investigator would:

(Multiple Choice)

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Question 51

A researcher assesses the length of the prison sentence for physically attractive and physically unattractive defendants.He believes that attractive defendants will receive shorter prison sentences than unattractive defendants.The null hypothesis would suggest that:

(Multiple Choice)

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Question 52

When examining the strength of the relationship between study time and test score,the null hypothesis would suggest that the true population correlation is:

(Multiple Choice)

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Question 53

When testing the differences between means,the _____ hypothesis suggests that population means are not equal.

(Multiple Choice)

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Question 54

The probability of making a Type II error increases when the:

(Multiple Choice)

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Question 55

When comparing two group means,the _____ refers to the number of scores free to vary once the means are known.

(Multiple Choice)

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Question 56

Rejecting the null hypothesis when it is true is called a _ error,whereas not rejecting a false null hypothesis when it is false is called a(n)_ error.

(Multiple Choice)

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Question 57

A researcher wants to test a hypothesis according to which the mean rating of guilt will be higher for unattractive defendants than for attractive defendants.The appropriate statistical test would be the _____.

(Multiple Choice)

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Question 58

The expected value of t under the null hypothesis _____.

(Multiple Choice)

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Question 59

Adrian found no significant difference in the amount of money spent on entertainment on those students who live on campus versus those who live off campus.Based on this finding,Adrian would:

(Multiple Choice)

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Question 60

Showing 41 - 60 of 70

According to a survey,57 percent of the citizens of the United States prefer a Democratic candidate,while 43 percent of the citizens prefer a Republican candidate in an election.The survey reports a confidence interval (CFI)of 95 percent + or -3.What can be concluded from these results?

A researcher was interested in the differences in the opinions about marriage between men and women.She predicted that women would have different opinions about marriage from men.What would the null hypothesis suggest in this situation?

When analyzing the difference between two means,Professor Angus obtains the effect size as .85 using Cohen's d.In this case,Professor Angus can conclude that:

Aden finds that,on an average,men have higher starting salaries than women.In order to conclude that the differences in starting salaries are true differences and not a result of random error,Aden would employ the use of _____ statistics.

A desired probability of correctly rejecting the null hypothesis is the _____.

The appropriate statistical test for interval or ratio level data is the _____.

A researcher wants to know if cholesterol levels are lower in vegetarians or nonvegetarians.Which statistical test would be most appropriate for this data?

Which of the following is the least accurate statement about the use of statistical tests?

The appropriate statistical test for nominal level data of two groups is the:

According to her statistical analysis,an investigator found that significantly more men than women used punishment to discipline their children.Thus,the investigator would:

A researcher assesses the length of the prison sentence for physically attractive and physically unattractive defendants.He believes that attractive defendants will receive shorter prison sentences than unattractive defendants.The null hypothesis would suggest that:

When examining the strength of the relationship between study time and test score,the null hypothesis would suggest that the true population correlation is:

When testing the differences between means,the _____ hypothesis suggests that population means are not equal.

The probability of making a Type II error increases when the:

When comparing two group means,the _____ refers to the number of scores free to vary once the means are known.

Rejecting the null hypothesis when it is true is called a _ error,whereas not rejecting a false null hypothesis when it is false is called a(n)_ error.

A researcher wants to test a hypothesis according to which the mean rating of guilt will be higher for unattractive defendants than for attractive defendants.The appropriate statistical test would be the _____.

The expected value of t under the null hypothesis _____.

Adrian found no significant difference in the amount of money spent on entertainment on those students who live on campus versus those who live off campus.Based on this finding,Adrian would:

Scientific Understanding of Behavior

Where to Start

Ethics in Behavioral Research

Fundamental Research Issues

Measurement Concepts

Observational Methods

Asking People About Themselves: Survey Research

Experimental Design

Conducting Experiments

Complex Experimental Designs

Single-Case, Quasi-Experimental, and Developmental Research

Understanding Research Results: Description and Correlation

Generalization

Filters

Exam 13: Understanding Research Results: Statistical Inference

According to a survey,57 percent of the citizens of the United States prefer a Democratic candidate,while 43 percent of the citizens prefer a Republican candidate in an election.The survey reports a confidence interval (CFI)of 95 percent + or -3.What can be concluded from these results?

A researcher was interested in the differences in the opinions about marriage between men and women.She predicted that women would have different opinions about marriage from men.What would the null hypothesis suggest in this situation?

When analyzing the difference between two means,Professor Angus obtains the effect size as .85 using Cohen's d.In this case,Professor Angus can conclude that:

Aden finds that,on an average,men have higher starting salaries than women.In order to conclude that the differences in starting salaries are true differences and not a result of random error,Aden would employ the use of _____ statistics.

A desired probability of correctly rejecting the null hypothesis is the _____.

The appropriate statistical test for interval or ratio level data is the _____.

A researcher wants to know if cholesterol levels are lower in vegetarians or nonvegetarians.Which statistical test would be most appropriate for this data?

Which of the following is the least accurate statement about the use of statistical tests?

The appropriate statistical test for nominal level data of two groups is the:

According to her statistical analysis,an investigator found that significantly more men than women used punishment to discipline their children.Thus,the investigator would:

A researcher assesses the length of the prison sentence for physically attractive and physically unattractive defendants.He believes that attractive defendants will receive shorter prison sentences than unattractive defendants.The null hypothesis would suggest that:

When examining the strength of the relationship between study time and test score,the null hypothesis would suggest that the true population correlation is:

When testing the differences between means,the _____ hypothesis suggests that population means are not equal.

The probability of making a Type II error increases when the:

When comparing two group means,the _____ refers to the number of scores free to vary once the means are known.

Rejecting the null hypothesis when it is true is called a _____ error,whereas not rejecting a false null hypothesis when it is false is called a(n)_____ error.

A researcher wants to test a hypothesis according to which the mean rating of guilt will be higher for unattractive defendants than for attractive defendants.The appropriate statistical test would be the _____.

The expected value of t under the null hypothesis _____.

Adrian found no significant difference in the amount of money spent on entertainment on those students who live on campus versus those who live off campus.Based on this finding,Adrian would:

Scientific Understanding of Behavior

Where to Start

Ethics in Behavioral Research

Fundamental Research Issues

Measurement Concepts

Observational Methods

Asking People About Themselves: Survey Research

Experimental Design

Conducting Experiments

Complex Experimental Designs

Single-Case, Quasi-Experimental, and Developmental Research

Understanding Research Results: Description and Correlation

Generalization

Filters

Rejecting the null hypothesis when it is true is called a _ error,whereas not rejecting a false null hypothesis when it is false is called a(n)_ error.