Exam 8: Hypothesis Testing: Inferences About a Single Mean

In general,a directional test will be _____ than a corresponding nondirectional test if the actual population mean and the hypothesized population mean differ in the specified direction.

(Multiple Choice)

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Question 81

A probability value that defines a region associated with unexpected results is known as _____.

(Multiple Choice)

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Question 82

Which characteristics of the t distribution influences its shape?

(Multiple Choice)

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Question 83

Suppose you know that the mean score (m)on a measure of the personality trait "Openness to Experience" is 35.66 in a population of artists,with a standard deviation (s)of 13.32.Next,assume you went to Greenwich Village and gave this personality measure to a group of 10 artists.The mean in this sample was 40.33.You are interested in testing whether the 10 Greenwich Village artists were sampled from the same population described above.Calculate the standard error of the mean for this example.

(Short Answer)

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Question 84

When a researcher obtains a result that is consistent with the null hypothesis,he or she accepts the null hypothesis as being true.

(True/False)

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Question 85

Directional tests are often referred to as :

(Multiple Choice)

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Question 86

The one-sample t test is based on the assumption that the scores on the variable are normally distributed in the population.

(True/False)

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Question 87

In a computer printout of a one-sample t test,what does a p value of 0.000 indicate?

(Multiple Choice)

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Question 88

Statisticians have discovered that the one-sample t test is not robust to violations of the normality assumption under any conditions.

(True/False)

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Question 89

The _ is a probability value determined by the experimenter to define the _,which is the set of all scores more extreme than the critical values.

(Multiple Choice)

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Question 90

A researcher takes a very large,nationwide random sample of 7th grade students and computes a mean verbal ability score of 85.50 with a standard deviation of 8.35.From this information,she computes a standard error of the mean of 2.64.What are the upper and lower limits of the 95% confidence interval for the mean?

(Multiple Choice)

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Question 91

Suppose you know that the mean score (m)on a measure of the personality trait "Openness to Experience" is 35.66 in a population of artists,with a standard deviation (s)of 13.32.Next,assume you went to Greenwich Village and gave this personality measure to a group of 10 artists.The mean in this sample was 40.33.You are interested in testing whether the 10 Greenwich Village artists were sampled from the same population described above.Calculate the test statistic for this example.

(Short Answer)

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Question 92

The confidence interval most commonly used by researchers in the behavioral sciences is the 100% confidence interval.

(True/False)

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Question 93

The probability of making a Type II error is traditionally called alpha and is represented by á.

(True/False)

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Question 94

A statistically significant result will always have important practical implications.

(True/False)

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Question 95

Briefly describe the steps involved in the hypothesis testing process.

(Essay)

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Question 96

Which of the following statements is an example of a two-tailed alternative hypothesis?

(Multiple Choice)

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Question 97

When the variable under study is quantitative in nature and measured on a level that at least approximates interval characteristics,hypotheses about the value of a population mean can be tested using the one sample z test,if the population variance is known.

(True/False)

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Question 98

In principle,we can _ accept the null hypothesis as being _ via our statistical methods.

(Multiple Choice)

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Question 99

As with the normal distribution,there is a single t distribution for every sample size.

(True/False)

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Question 100

Showing 81 - 100 of 160

In general,a directional test will be _____ than a corresponding nondirectional test if the actual population mean and the hypothesized population mean differ in the specified direction.

A probability value that defines a region associated with unexpected results is known as _____.

Which characteristics of the t distribution influences its shape?

When a researcher obtains a result that is consistent with the null hypothesis,he or she accepts the null hypothesis as being true.

Directional tests are often referred to as :

The one-sample t test is based on the assumption that the scores on the variable are normally distributed in the population.

In a computer printout of a one-sample t test,what does a p value of 0.000 indicate?

Statisticians have discovered that the one-sample t test is not robust to violations of the normality assumption under any conditions.

The _ is a probability value determined by the experimenter to define the _,which is the set of all scores more extreme than the critical values.

The confidence interval most commonly used by researchers in the behavioral sciences is the 100% confidence interval.

The probability of making a Type II error is traditionally called alpha and is represented by á.

A statistically significant result will always have important practical implications.

Briefly describe the steps involved in the hypothesis testing process.

Which of the following statements is an example of a two-tailed alternative hypothesis?

When the variable under study is quantitative in nature and measured on a level that at least approximates interval characteristics,hypotheses about the value of a population mean can be tested using the one sample z test,if the population variance is known.

In principle,we can _ accept the null hypothesis as being _ via our statistical methods.

As with the normal distribution,there is a single t distribution for every sample size.

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Percentiles percentile Ranks standard Scores and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Measures of Central Tendency and Variability

Estimation and Sampling Distributions

Probability

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T -Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

Exam 8: Hypothesis Testing: Inferences About a Single Mean

In general,a directional test will be _____ than a corresponding nondirectional test if the actual population mean and the hypothesized population mean differ in the specified direction.

A probability value that defines a region associated with unexpected results is known as _____.

Which characteristics of the t distribution influences its shape?

When a researcher obtains a result that is consistent with the null hypothesis,he or she accepts the null hypothesis as being true.

Directional tests are often referred to as :

The one-sample t test is based on the assumption that the scores on the variable are normally distributed in the population.

In a computer printout of a one-sample t test,what does a p value of 0.000 indicate?

Statisticians have discovered that the one-sample t test is not robust to violations of the normality assumption under any conditions.

The _____ is a probability value determined by the experimenter to define the _____,which is the set of all scores more extreme than the critical values.

The confidence interval most commonly used by researchers in the behavioral sciences is the 100% confidence interval.

The probability of making a Type II error is traditionally called alpha and is represented by á.

A statistically significant result will always have important practical implications.

Briefly describe the steps involved in the hypothesis testing process.

Which of the following statements is an example of a two-tailed alternative hypothesis?

When the variable under study is quantitative in nature and measured on a level that at least approximates interval characteristics,hypotheses about the value of a population mean can be tested using the one sample z test,if the population variance is known.

In principle,we can _____ accept the null hypothesis as being _____ via our statistical methods.

As with the normal distribution,there is a single t distribution for every sample size.

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Percentiles percentile Ranks standard Scores and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Measures of Central Tendency and Variability

Estimation and Sampling Distributions

Probability

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T -Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

The _ is a probability value determined by the experimenter to define the _,which is the set of all scores more extreme than the critical values.

In principle,we can _ accept the null hypothesis as being _ via our statistical methods.